19225660940 has 24 divisors (see below), whose sum is σ = 41058193680. Its totient is φ = 7559920448.

The previous prime is 19225660931. The next prime is 19225660957. The reversal of 19225660940 is 4906652291.

It is a junction number, because it is equal to n+sod(n) for n = 19225660891 and 19225660900.

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, 8145287 + ... + 8147646.

It is an arithmetic number, because the mean of its divisors is an integer number (1710758070).

Almost surely, 2^19225660940 is an apocalyptic number.

19225660940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19225660940 is an abundant number, since it is smaller than the sum of its proper divisors (21832532740).

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

19225660940 is a wasteful number, since it uses less digits than its factorization.

19225660940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16293001 (or 16292999 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 19225660940 in words is "nineteen billion, two hundred twenty-five million, six hundred sixty thousand, nine hundred forty".