19174894672 has 10 divisors (see below), whose sum is σ = 37151358458. Its totient is φ = 9587447328.

The previous prime is 19174894667. The next prime is 19174894691. The reversal of 19174894672 is 27649847191.

It can be written as a sum of positive squares in only one way, i.e., 16789939776 + 2384954896 = 129576^2 + 48836^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599215443 + ... + 599215474.

Almost surely, 2^19174894672 is an apocalyptic number.

It is an amenable number.

19174894672 is a deficient number, since it is larger than the sum of its proper divisors (17976463786).

19174894672 is a wasteful number, since it uses less digits than its factorization.

19174894672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198430925 (or 1198430919 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 58.

The spelling of 19174894672 in words is "nineteen billion, one hundred seventy-four million, eight hundred ninety-four thousand, six hundred seventy-two".