19408428002 has 16 divisors (see below), whose sum is σ = 30148615800. Its totient is φ = 9359602560.

The previous prime is 19408427993. The next prime is 19408428043. The reversal of 19408428002 is 20082480491.

It can be written as a sum of positive squares in 4 ways, for example, as 16931474641 + 2476953361 = 130121^2 + 49769^2 .

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, 123227 + ... + 232382.

Almost surely, 2^19408428002 is an apocalyptic number.

19408428002 is a deficient number, since it is larger than the sum of its proper divisors (10740187798).

19408428002 is a wasteful number, since it uses less digits than its factorization.

19408428002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356581.

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 19408428002 in words is "nineteen billion, four hundred eight million, four hundred twenty-eight thousand, two".