18510141172 has 12 divisors (see below), whose sum is σ = 32393789316. Its totient is φ = 9254772800.

The previous prime is 18510141149. The next prime is 18510141193. The reversal of 18510141172 is 27114101581.

It can be written as a sum of positive squares in 2 ways, for example, as 8338611856 + 10171529316 = 91316^2 + 100854^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124458 + ... + 229150.

It is an arithmetic number, because the mean of its divisors is an integer number (2699482443).

Almost surely, 2^18510141172 is an apocalyptic number.

It is an amenable number.

18510141172 is a deficient number, since it is larger than the sum of its proper divisors (13883648144).

18510141172 is a wasteful number, since it uses less digits than its factorization.

18510141172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148898 (or 148896 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 31.

The spelling of 18510141172 in words is "eighteen billion, five hundred ten million, one hundred forty-one thousand, one hundred seventy-two".