19404055137 has 16 divisors (see below), whose sum is σ = 25985627712. Its totient is φ = 12879336960.

The previous prime is 19404055103. The next prime is 19404055147. The reversal of 19404055137 is 73155040491.

It is not a de Polignac number, because 19404055137 - 2¹² = 19404051041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19404055095 and 19404055104.

It is not an unprimeable number, because it can be changed into a prime (19404055147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1084498 + ... + 1102244.

It is an arithmetic number, because the mean of its divisors is an integer number (1624101732).

Almost surely, 2^19404055137 is an apocalyptic number.

It is an amenable number.

19404055137 is a deficient number, since it is larger than the sum of its proper divisors (6581572575).

19404055137 is a wasteful number, since it uses less digits than its factorization.

19404055137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19328.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 19404055137 in words is "nineteen billion, four hundred four million, fifty-five thousand, one hundred thirty-seven".