19345897752 has 16 divisors (see below), whose sum is σ = 48364744440. Its totient is φ = 6448632576.

The previous prime is 19345897619. The next prime is 19345897783. The reversal of 19345897752 is 25779854391.

It is a happy number.

It is a congruent number.

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, 403039513 + ... + 403039560.

Almost surely, 2^19345897752 is an apocalyptic number.

19345897752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19345897752 is an abundant number, since it is smaller than the sum of its proper divisors (29018846688).

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

19345897752 is a wasteful number, since it uses less digits than its factorization.

19345897752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806079082 (or 806079078 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 60.

The spelling of 19345897752 in words is "nineteen billion, three hundred forty-five million, eight hundred ninety-seven thousand, seven hundred fifty-two".