19214395456 has 21 divisors (see below), whose sum is σ = 38130766639. Its totient is φ = 9606643264.

The previous prime is 19214395427. The next prime is 19214395483. The reversal of 19214395456 is 65459341291.

The square root of 19214395456 is 138616.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1100265 + ... + 1117591.

Almost surely, 2^19214395456 is an apocalyptic number.

19214395456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

19214395456 is the 138616-th square number.

It is an amenable number.

19214395456 is a deficient number, since it is larger than the sum of its proper divisors (18916371183).

19214395456 is an frugal number, since it uses more digits than its factorization.

19214395456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34666 (or 17329 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 49.

Multiplying 19214395456 by its sum of digits (49), we get a square (941505377344 = 970312²).

The spelling of 19214395456 in words is "nineteen billion, two hundred fourteen million, three hundred ninety-five thousand, four hundred fifty-six".