19530376812 has 72 divisors (see below), whose sum is σ = 49782059600. Its totient is φ = 6455697408.

The previous prime is 19530376793. The next prime is 19530376813. The reversal of 19530376812 is 21867303591.

19530376812 is a `hidden beast` number, since 1 + 9 + 530 + 37 + 6 + 81 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (19530376813) 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, 5647788 + ... + 5651244.

Almost surely, 2^19530376812 is an apocalyptic number.

19530376812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19530376812 is an abundant number, since it is smaller than the sum of its proper divisors (30251682788).

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

19530376812 is a wasteful number, since it uses less digits than its factorization.

19530376812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735 (or 4730 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 19530376812 in words is "nineteen billion, five hundred thirty million, three hundred seventy-six thousand, eight hundred twelve".