18029087990 has 16 divisors (see below), whose sum is σ = 32455464048. Its totient is φ = 7210945056.

The previous prime is 18029087971. The next prime is 18029088023. The reversal of 18029087990 is 9978092081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31049 + ... + 192411.

It is an arithmetic number, because the mean of its divisors is an integer number (2028466503).

Almost surely, 2^18029087990 is an apocalyptic number.

18029087990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18029087990 is a deficient number, since it is larger than the sum of its proper divisors (14426376058).

18029087990 is a wasteful number, since it uses less digits than its factorization.

18029087990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172543.

The product of its (nonzero) digits is 653184, while the sum is 53.

The spelling of 18029087990 in words is "eighteen billion, twenty-nine million, eighty-seven thousand, nine hundred ninety".