18900029590 has 16 divisors (see below), whose sum is σ = 36636980688. Its totient is φ = 6978472416.

The previous prime is 18900029579. The next prime is 18900029597. The reversal of 18900029590 is 9592000981.

It is a super-2 number, since 2×18900029590² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18900029597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72692292 + ... + 72692551.

It is an arithmetic number, because the mean of its divisors is an integer number (2289811293).

Almost surely, 2^18900029590 is an apocalyptic number.

18900029590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18900029590 is a deficient number, since it is larger than the sum of its proper divisors (17736951098).

18900029590 is a wasteful number, since it uses less digits than its factorization.

18900029590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145384863.

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 18900029590 in words is "eighteen billion, nine hundred million, twenty-nine thousand, five hundred ninety".