19409077834 has 8 divisors (see below), whose sum is σ = 30117534660. Its totient is φ = 9369899616.

The previous prime is 19409077823. The next prime is 19409077859. The reversal of 19409077834 is 43877090491.

It can be written as a sum of positive squares in 2 ways, for example, as 19164249225 + 244828609 = 138435^2 + 15647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167319579 + ... + 167319694.

Almost surely, 2^19409077834 is an apocalyptic number.

19409077834 is a deficient number, since it is larger than the sum of its proper divisors (10708456826).

19409077834 is a wasteful number, since it uses less digits than its factorization.

19409077834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334639304.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 19409077834 in words is "nineteen billion, four hundred nine million, seventy-seven thousand, eight hundred thirty-four".