18352952434 has 4 divisors (see below), whose sum is σ = 27529428654. Its totient is φ = 9176476216.

The previous prime is 18352952389. The next prime is 18352952477. The reversal of 18352952434 is 43425925381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43425925381 = 263 ⋅165117587.

It can be written as a sum of positive squares in only one way, i.e., 15550838209 + 2802114225 = 124703^2 + 52935^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4588238107 + ... + 4588238110.

Almost surely, 2^18352952434 is an apocalyptic number.

18352952434 is a deficient number, since it is larger than the sum of its proper divisors (9176476220).

18352952434 is an equidigital number, since it uses as much as digits as its factorization.

18352952434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176476219.

The product of its digits is 1036800, while the sum is 46.

The spelling of 18352952434 in words is "eighteen billion, three hundred fifty-two million, nine hundred fifty-two thousand, four hundred thirty-four".