18420762213674 has 4 divisors (see below), whose sum is σ = 27631143320514. Its totient is φ = 9210381106836.

The previous prime is 18420762213611. The next prime is 18420762213709. The reversal of 18420762213674 is 47631226702481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9356104500625 + 9064657713049 = 3058775^2 + 3010757^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4605190553417 + ... + 4605190553420.

Almost surely, 2^{18420762213674} is an apocalyptic number.

18420762213674 is a deficient number, since it is larger than the sum of its proper divisors (9210381106840).

18420762213674 is an equidigital number, since it uses as much as digits as its factorization.

18420762213674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9210381106839.

The product of its (nonzero) digits is 5419008, while the sum is 53.

The spelling of 18420762213674 in words is "eighteen trillion, four hundred twenty billion, seven hundred sixty-two million, two hundred thirteen thousand, six hundred seventy-four".