18029870149 has 32 divisors (see below), whose sum is σ = 19575489024. Its totient is φ = 16545607680.

The previous prime is 18029870107. The next prime is 18029870189. The reversal of 18029870149 is 94107892081.

It is not a de Polignac number, because 18029870149 - 2⁷ = 18029870021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18029870189) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 57973704 + ... + 57974014.

It is an arithmetic number, because the mean of its divisors is an integer number (611734032).

Almost surely, 2^18029870149 is an apocalyptic number.

It is an amenable number.

18029870149 is a deficient number, since it is larger than the sum of its proper divisors (1545618875).

18029870149 is a wasteful number, since it uses less digits than its factorization.

18029870149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837.

The product of its (nonzero) digits is 290304, while the sum is 49.

The spelling of 18029870149 in words is "eighteen billion, twenty-nine million, eight hundred seventy thousand, one hundred forty-nine".