19009239875 has 16 divisors (see below), whose sum is σ = 23745211776. Its totient is φ = 15193494400.

The previous prime is 19009239869. The next prime is 19009239901. The reversal of 19009239875 is 57893290091.

It is a Cunningham number, because it is equal to 137874²-1.

It is not a de Polignac number, because 19009239875 - 2¹⁴ = 19009223491 is a prime.

It is a super-2 number, since 2×19009239875² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68939 + ... + 206811.

It is an arithmetic number, because the mean of its divisors is an integer number (1484075736).

Almost surely, 2^19009239875 is an apocalyptic number.

19009239875 is a deficient number, since it is larger than the sum of its proper divisors (4735971901).

19009239875 is a wasteful number, since it uses less digits than its factorization.

19009239875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138991 (or 138981 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 19009239875 in words is "nineteen billion, nine million, two hundred thirty-nine thousand, eight hundred seventy-five".