19749130176 has 56 divisors (see below), whose sum is σ = 55003070080. Its totient is φ = 6236566272.

The previous prime is 19749130169. The next prime is 19749130183. The reversal of 19749130176 is 67103194791.

It is an interprime number because it is at equal distance from previous prime (19749130169) and next prime (19749130183).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 2703196 + ... + 2710491.

It is an arithmetic number, because the mean of its divisors is an integer number (982197680).

Almost surely, 2^19749130176 is an apocalyptic number.

19749130176 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19749130176 is an abundant number, since it is smaller than the sum of its proper divisors (35253939904).

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

19749130176 is a wasteful number, since it uses less digits than its factorization.

19749130176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413721 (or 5413711 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 48.

The spelling of 19749130176 in words is "nineteen billion, seven hundred forty-nine million, one hundred thirty thousand, one hundred seventy-six".