15492971494 has 128 divisors (see below), whose sum is σ = 32402571264. Its totient is φ = 5359824000.

The previous prime is 15492971491. The next prime is 15492971519. The reversal of 15492971494 is 49417929451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15492971491) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11853189 + ... + 11854495.

It is an arithmetic number, because the mean of its divisors is an integer number (253145088).

Almost surely, 2^15492971494 is an apocalyptic number.

15492971494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15492971494 is an abundant number, since it is smaller than the sum of its proper divisors (16909599770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15492971494 is a wasteful number, since it uses less digits than its factorization.

15492971494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562.

The product of its digits is 3265920, while the sum is 55.

The spelling of 15492971494 in words is "fifteen billion, four hundred ninety-two million, nine hundred seventy-one thousand, four hundred ninety-four".