19572940426 has 32 divisors (see below), whose sum is σ = 31757806080. Its totient is φ = 8993770176.

The previous prime is 19572940411. The next prime is 19572940441. The reversal of 19572940426 is 62404927591.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19572940411) and next prime (19572940441).

It is a super-2 number, since 2×19572940426² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19572940426.

It is an unprimeable number.

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, 6178695 + ... + 6181861.

It is an arithmetic number, because the mean of its divisors is an integer number (992431440).

Almost surely, 2^19572940426 is an apocalyptic number.

19572940426 is a deficient number, since it is larger than the sum of its proper divisors (12184865654).

19572940426 is a wasteful number, since it uses less digits than its factorization.

19572940426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 19572940426 in words is "nineteen billion, five hundred seventy-two million, nine hundred forty thousand, four hundred twenty-six".