18612053476 has 9 divisors (see below), whose sum is σ = 32571571081. Its totient is φ = 9305890312.

The previous prime is 18612053437. The next prime is 18612053477. The reversal of 18612053476 is 67435021681.

The square root of 18612053476 is 136426.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6517332900 + 12094720576 = 80730^2 + 109976^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18612053477) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 238746 + ... + 306958.

Almost surely, 2^18612053476 is an apocalyptic number.

18612053476 is the 136426-th square number.

It is an amenable number.

18612053476 is a deficient number, since it is larger than the sum of its proper divisors (13959517605).

18612053476 is an frugal number, since it uses more digits than its factorization.

18612053476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136430 (or 68215 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

It can be divided in two parts, 1861205 and 3476, that added together give a palindrome (1864681).

The spelling of 18612053476 in words is "eighteen billion, six hundred twelve million, fifty-three thousand, four hundred seventy-six".