18138159070 has 32 divisors (see below), whose sum is σ = 33290280000. Its totient is φ = 7113450240.

The previous prime is 18138159037. The next prime is 18138159097. The reversal of 18138159070 is 7095183181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143431 + ... + 238429.

It is an arithmetic number, because the mean of its divisors is an integer number (1040321250).

Almost surely, 2^18138159070 is an apocalyptic number.

18138159070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18138159070 is a deficient number, since it is larger than the sum of its proper divisors (15152120930).

18138159070 is a wasteful number, since it uses less digits than its factorization.

18138159070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95380.

The product of its (nonzero) digits is 60480, while the sum is 43.

The spelling of 18138159070 in words is "eighteen billion, one hundred thirty-eight million, one hundred fifty-nine thousand, seventy".