19408920330 has 16 divisors (see below), whose sum is σ = 46581408864. Its totient is φ = 5175712080.

The previous prime is 19408920329. The next prime is 19408920359. The reversal of 19408920330 is 3302980491.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323481976 + ... + 323482035.

It is an arithmetic number, because the mean of its divisors is an integer number (2911338054).

Almost surely, 2^19408920330 is an apocalyptic number.

19408920330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19408920330 is an abundant number, since it is smaller than the sum of its proper divisors (27172488534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19408920330 is a wasteful number, since it uses less digits than its factorization.

19408920330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646964021.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 19408920330 in words is "nineteen billion, four hundred eight million, nine hundred twenty thousand, three hundred thirty".