19408728675 has 48 divisors (see below), whose sum is σ = 36808850432. Its totient is φ = 8839756800.

The previous prime is 19408728671. The next prime is 19408728683. The reversal of 19408728675 is 57682780491.

It is not a de Polignac number, because 19408728675 - 2² = 19408728671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19408728671) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74067 + ... + 210483.

Almost surely, 2^19408728675 is an apocalyptic number.

19408728675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19408728675 is a deficient number, since it is larger than the sum of its proper divisors (17400121757).

19408728675 is a wasteful number, since it uses less digits than its factorization.

19408728675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136708 (or 136703 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 19408728675 in words is "nineteen billion, four hundred eight million, seven hundred twenty-eight thousand, six hundred seventy-five".