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38868550379 = 231689936973
BaseRepresentation
bin100100001100101111…
…110000001011101011
310201022211000221101222
4210030233300023223
51114100322103004
625504515532255
72544125140601
oct441457601353
9121284027358
1038868550379
111553631320a
127648bba08b
13388583cb49
141c4a203871
1510274dc7be
hex90cbf02eb

38868550379 has 4 divisors (see below), whose sum is σ = 40558487376. Its totient is φ = 37178613384.

The previous prime is 38868550373. The next prime is 38868550381. The reversal of 38868550379 is 97305586883.

38868550379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97305586883 = 158361469101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38868550379 is a prime.

It is a super-2 number, since 2×388685503792 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38868550373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844968464 + ... + 844968509.

It is an arithmetic number, because the mean of its divisors is an integer number (10139621844).

Almost surely, 238868550379 is an apocalyptic number.

38868550379 is a deficient number, since it is larger than the sum of its proper divisors (1689936997).

38868550379 is a wasteful number, since it uses less digits than its factorization.

38868550379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689936996.

The product of its (nonzero) digits is 43545600, while the sum is 62.

The spelling of 38868550379 in words is "thirty-eight billion, eight hundred sixty-eight million, five hundred fifty thousand, three hundred seventy-nine".

Divisors: 1 23 1689936973 38868550379