18039426652 has 36 divisors (see below), whose sum is σ = 35795093880. Its totient is φ = 7885838592.

The previous prime is 18039426649. The next prime is 18039426679. The reversal of 18039426652 is 25662493081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4219588 + ... + 4223860.

Almost surely, 2^18039426652 is an apocalyptic number.

It is an amenable number.

18039426652 is a deficient number, since it is larger than the sum of its proper divisors (17755667228).

18039426652 is an equidigital number, since it uses as much as digits as its factorization.

18039426652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8582 (or 4307 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

It can be divided in two parts, 180394 and 26652, that added together give a triangular number (207046 = T₆₄₃).

The spelling of 18039426652 in words is "eighteen billion, thirty-nine million, four hundred twenty-six thousand, six hundred fifty-two".