15745795490 has 8 divisors (see below), whose sum is σ = 28342431900. Its totient is φ = 6298318192.

The previous prime is 15745795477. The next prime is 15745795511. The reversal of 15745795490 is 9459754751.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15680298841 + 65496649 = 125221^2 + 8093^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×15745795490² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787289765 + ... + 787289784.

Almost surely, 2^15745795490 is an apocalyptic number.

15745795490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15745795490 is a deficient number, since it is larger than the sum of its proper divisors (12596636410).

15745795490 is a wasteful number, since it uses less digits than its factorization.

15745795490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574579556.

The product of its (nonzero) digits is 7938000, while the sum is 56.

The spelling of 15745795490 in words is "fifteen billion, seven hundred forty-five million, seven hundred ninety-five thousand, four hundred ninety".