18030791138 has 16 divisors (see below), whose sum is σ = 27633813120. Its totient is φ = 8819689296.

The previous prime is 18030791081. The next prime is 18030791153. The reversal of 18030791138 is 83119703081.

It is a junction number, because it is equal to n+sod(n) for n = 18030791095 and 18030791104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178193 + ... + 260411.

It is an arithmetic number, because the mean of its divisors is an integer number (1727113320).

Almost surely, 2^18030791138 is an apocalyptic number.

18030791138 is a deficient number, since it is larger than the sum of its proper divisors (9603021982).

18030791138 is a wasteful number, since it uses less digits than its factorization.

18030791138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84601.

The product of its (nonzero) digits is 36288, while the sum is 41.

The spelling of 18030791138 in words is "eighteen billion, thirty million, seven hundred ninety-one thousand, one hundred thirty-eight".