19153840932 has 120 divisors (see below), whose sum is σ = 51642775800. Its totient is φ = 6186447360.

The previous prime is 19153840903. The next prime is 19153840933. The reversal of 19153840932 is 23904835191.

It is a happy number.

19153840932 is a `hidden beast` number, since 191 + 53 + 8 + 409 + 3 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3709476 + 19150131456 = 1926^2 + 138384^2 .

It is not an unprimeable number, because it can be changed into a prime (19153840933) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1974478 + ... + 1984154.

It is an arithmetic number, because the mean of its divisors is an integer number (430356465).

Almost surely, 2^19153840932 is an apocalyptic number.

19153840932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19153840932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25821387900).

19153840932 is an abundant number, since it is smaller than the sum of its proper divisors (32488934868).

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

19153840932 is a wasteful number, since it uses less digits than its factorization.

19153840932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9883 (or 9872 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 19153840932 in words is "nineteen billion, one hundred fifty-three million, eight hundred forty thousand, nine hundred thirty-two".