18634433157346 has 4 divisors (see below), whose sum is σ = 27951649736022. Its totient is φ = 9317216578672.

The previous prime is 18634433157281. The next prime is 18634433157367. The reversal of 18634433157346 is 64375133443681.

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., 15606363339121 + 3028069818225 = 3950489^2 + 1740135^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4658608289335 + ... + 4658608289338.

Almost surely, 2^{18634433157346} is an apocalyptic number.

18634433157346 is a deficient number, since it is larger than the sum of its proper divisors (9317216578676).

18634433157346 is an equidigital number, since it uses as much as digits as its factorization.

18634433157346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9317216578675.

The product of its digits is 52254720, while the sum is 58.

The spelling of 18634433157346 in words is "eighteen trillion, six hundred thirty-four billion, four hundred thirty-three million, one hundred fifty-seven thousand, three hundred forty-six".