19314172450 has 12 divisors (see below), whose sum is σ = 35924360850. Its totient is φ = 7725668960.

The previous prime is 19314172441. The next prime is 19314172483. The reversal of 19314172450 is 5427141391.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 12479347521 + 6834824929 = 111711^2 + 82673^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193141675 + ... + 193141774.

Almost surely, 2^19314172450 is an apocalyptic number.

19314172450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19314172450 is a deficient number, since it is larger than the sum of its proper divisors (16610188400).

19314172450 is a wasteful number, since it uses less digits than its factorization.

19314172450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386283461 (or 386283456 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 19314172450 in words is "nineteen billion, three hundred fourteen million, one hundred seventy-two thousand, four hundred fifty".