18039469352 has 16 divisors (see below), whose sum is σ = 35813652660. Its totient is φ = 8489161984.

The previous prime is 18039469339. The next prime is 18039469361. The reversal of 18039469352 is 25396493081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17626810756 + 412658596 = 132766^2 + 20314^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18039469352.

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, 66321443 + ... + 66321714.

Almost surely, 2^18039469352 is an apocalyptic number.

It is an amenable number.

18039469352 is a deficient number, since it is larger than the sum of its proper divisors (17774183308).

18039469352 is a wasteful number, since it uses less digits than its factorization.

18039469352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132643180 (or 132643176 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 18039469352 in words is "eighteen billion, thirty-nine million, four hundred sixty-nine thousand, three hundred fifty-two".