19131795040 has 48 divisors (see below), whose sum is σ = 45297085680. Its totient is φ = 7636088320.

The previous prime is 19131795037. The next prime is 19131795143. The reversal of 19131795040 is 4059713191.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 19131794984 and 19131795002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55930 + ... + 203449.

It is an arithmetic number, because the mean of its divisors is an integer number (943689285).

Almost surely, 2^19131795040 is an apocalyptic number.

19131795040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19131795040 is an abundant number, since it is smaller than the sum of its proper divisors (26165290640).

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

19131795040 is a wasteful number, since it uses less digits than its factorization.

19131795040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259855 (or 259847 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 19131795040 in words is "nineteen billion, one hundred thirty-one million, seven hundred ninety-five thousand, forty".