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38860025381 = 53117731593
BaseRepresentation
bin100100001100001111…
…001110111000100101
310201022012222211022022
4210030033032320211
51114041131303011
625504013112525
72543662523432
oct441417167045
9121265884268
1038860025381
1115531520261
127646188745
133883b46778
141c49024b89
1510268a68db
hex90c3cee25

38860025381 has 4 divisors (see below), whose sum is σ = 38860810092. Its totient is φ = 38859240672.

The previous prime is 38860025363. The next prime is 38860025387. The reversal of 38860025381 is 18352006883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29918620900 + 8941404481 = 172970^2 + 94559^2 .

It is a cyclic number.

It is not a de Polignac number, because 38860025381 - 214 = 38860008997 is a prime.

It is a super-2 number, since 2×388600253812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38860025387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312680 + ... + 418913.

It is an arithmetic number, because the mean of its divisors is an integer number (9715202523).

Almost surely, 238860025381 is an apocalyptic number.

It is an amenable number.

38860025381 is a deficient number, since it is larger than the sum of its proper divisors (784711).

38860025381 is an equidigital number, since it uses as much as digits as its factorization.

38860025381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784710.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 38860025381 in words is "thirty-eight billion, eight hundred sixty million, twenty-five thousand, three hundred eighty-one".

Divisors: 1 53117 731593 38860025381