19124686444 has 6 divisors (see below), whose sum is σ = 33468201284. Its totient is φ = 9562343220.

The previous prime is 19124686433. The next prime is 19124686489. The reversal of 19124686444 is 44468642191.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2390585802 + ... + 2390585809.

Almost surely, 2^19124686444 is an apocalyptic number.

It is an amenable number.

19124686444 is a deficient number, since it is larger than the sum of its proper divisors (14343514840).

19124686444 is a wasteful number, since it uses less digits than its factorization.

19124686444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781171615 (or 4781171613 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 49.

The spelling of 19124686444 in words is "nineteen billion, one hundred twenty-four million, six hundred eighty-six thousand, four hundred forty-four".