Search a number
-
+
38463906487 = 293165365521
BaseRepresentation
bin100011110100101000…
…001010001010110111
310200021121121220100011
4203310220022022313
51112233230001422
625400423001051
72531112545026
oct436450121267
9120247556304
1038463906487
1115348966276
127555599187
13381ca638a6
141c0c5908bd
151001c0d077
hex8f4a0a2b7

38463906487 has 16 divisors (see below), whose sum is σ = 41137332480. Its totient is φ = 35883993600.

The previous prime is 38463906463. The next prime is 38463906499. The reversal of 38463906487 is 78460936483.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38463906487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38463904487) 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 15 ways as a sum of consecutive naturals, for example, 554287 + ... + 619807.

It is an arithmetic number, because the mean of its divisors is an integer number (2571083280).

Almost surely, 238463906487 is an apocalyptic number.

38463906487 is a deficient number, since it is larger than the sum of its proper divisors (2673425993).

38463906487 is a wasteful number, since it uses less digits than its factorization.

38463906487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66234.

The product of its (nonzero) digits is 20901888, while the sum is 58.

The spelling of 38463906487 in words is "thirty-eight billion, four hundred sixty-three million, nine hundred six thousand, four hundred eighty-seven".

Divisors: 1 29 31 653 899 18937 20243 65521 587047 1900109 2031151 42785213 58903379 1240771177 1326341603 38463906487