19345805028 has 36 divisors (see below), whose sum is σ = 53347524048. Its totient is φ = 5862365040.

The previous prime is 19345804979. The next prime is 19345805093. The reversal of 19345805028 is 82050854391.

19345805028 is a `hidden beast` number, since 1 + 93 + 4 + 58 + 0 + 502 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24426126 + ... + 24426917.

It is an arithmetic number, because the mean of its divisors is an integer number (1481875668).

Almost surely, 2^19345805028 is an apocalyptic number.

19345805028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19345805028 is an abundant number, since it is smaller than the sum of its proper divisors (34001719020).

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

19345805028 is a wasteful number, since it uses less digits than its factorization.

19345805028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48853064 (or 48853059 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 19345805028 in words is "nineteen billion, three hundred forty-five million, eight hundred five thousand, twenty-eight".