15835138492 has 24 divisors (see below), whose sum is σ = 28467954144. Its totient is φ = 7701550272.

The previous prime is 15835138439. The next prime is 15835138513. The reversal of 15835138492 is 29483153851.

It is a super-2 number, since 2×15835138492² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656673 + ... + 680359.

It is an arithmetic number, because the mean of its divisors is an integer number (1186164756).

Almost surely, 2^15835138492 is an apocalyptic number.

It is an amenable number.

15835138492 is a deficient number, since it is larger than the sum of its proper divisors (12632815652).

15835138492 is a wasteful number, since it uses less digits than its factorization.

15835138492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28245 (or 28243 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 49.

The spelling of 15835138492 in words is "fifteen billion, eight hundred thirty-five million, one hundred thirty-eight thousand, four hundred ninety-two".