17919406392 has 32 divisors (see below), whose sum is σ = 44918641680. Its totient is φ = 5957118720.

The previous prime is 17919406381. The next prime is 17919406403. The reversal of 17919406392 is 29360491971.

It is an interprime number because it is at equal distance from previous prime (17919406381) and next prime (17919406403).

It is a super-2 number, since 2×17919406392² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991909 + ... + 1009812.

Almost surely, 2^17919406392 is an apocalyptic number.

17919406392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

17919406392 is an abundant number, since it is smaller than the sum of its proper divisors (26999235288).

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

17919406392 is a wasteful number, since it uses less digits than its factorization.

17919406392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002103 (or 2002099 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The spelling of 17919406392 in words is "seventeen billion, nine hundred nineteen million, four hundred six thousand, three hundred ninety-two".