19435997652 has 48 divisors (see below), whose sum is σ = 45710841792. Its totient is φ = 6427272960.

The previous prime is 19435997599. The next prime is 19435997699. The reversal of 19435997652 is 25679953491.

It is a congruent number.

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, 3648663 + ... + 3653985.

It is an arithmetic number, because the mean of its divisors is an integer number (952309204).

Almost surely, 2^19435997652 is an apocalyptic number.

19435997652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19435997652 is an abundant number, since it is smaller than the sum of its proper divisors (26274844140).

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

19435997652 is a wasteful number, since it uses less digits than its factorization.

19435997652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7688 (or 7686 counting only the distinct ones).

The product of its digits is 18370800, while the sum is 60.

The spelling of 19435997652 in words is "nineteen billion, four hundred thirty-five million, nine hundred ninety-seven thousand, six hundred fifty-two".