19408729151 has 4 divisors (see below), whose sum is σ = 22181404752. Its totient is φ = 16636053552.

The previous prime is 19408729103. The next prime is 19408729163. The reversal of 19408729151 is 15192780491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19408729151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19408729096 and 19408729105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19408729451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1386337790 + ... + 1386337803.

It is an arithmetic number, because the mean of its divisors is an integer number (5545351188).

Almost surely, 2^19408729151 is an apocalyptic number.

19408729151 is a deficient number, since it is larger than the sum of its proper divisors (2772675601).

19408729151 is an equidigital number, since it uses as much as digits as its factorization.

19408729151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772675600.

The product of its (nonzero) digits is 181440, while the sum is 47.

The spelling of 19408729151 in words is "nineteen billion, four hundred eight million, seven hundred twenty-nine thousand, one hundred fifty-one".