18012955337 has 4 divisors (see below), whose sum is σ = 19398567300. Its totient is φ = 16627343376.

The previous prime is 18012955327. The next prime is 18012955357. The reversal of 18012955337 is 73355921081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73355921081 = 199 ⋅368622719.

It can be written as a sum of positive squares in 2 ways, for example, as 9375855241 + 8637100096 = 96829^2 + 92936^2 .

It is a cyclic number.

It is not a de Polignac number, because 18012955337 - 2⁴ = 18012955321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18012955327) 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 3 ways as a sum of consecutive naturals, for example, 692805962 + ... + 692805987.

It is an arithmetic number, because the mean of its divisors is an integer number (4849641825).

Almost surely, 2^18012955337 is an apocalyptic number.

It is an amenable number.

18012955337 is a deficient number, since it is larger than the sum of its proper divisors (1385611963).

18012955337 is a wasteful number, since it uses less digits than its factorization.

18012955337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385611962.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 18012955337 in words is "eighteen billion, twelve million, nine hundred fifty-five thousand, three hundred thirty-seven".