19537149852 has 72 divisors (see below), whose sum is σ = 54430691952. Its totient is φ = 5859302400.

The previous prime is 19537149851. The next prime is 19537149859. The reversal of 19537149852 is 25894173591.

It is a happy number.

19537149852 is a `hidden beast` number, since 1 + 9 + 537 + 14 + 98 + 5 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19537149851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215899 + ... + 292722.

Almost surely, 2^19537149852 is an apocalyptic number.

19537149852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19537149852 is an abundant number, since it is smaller than the sum of its proper divisors (34893542100).

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

19537149852 is a wasteful number, since it uses less digits than its factorization.

19537149852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508739 (or 508734 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The spelling of 19537149852 in words is "nineteen billion, five hundred thirty-seven million, one hundred forty-nine thousand, eight hundred fifty-two".