18650454939694 has 4 divisors (see below), whose sum is σ = 27975682409544. Its totient is φ = 9325227469846.

The previous prime is 18650454939667. The next prime is 18650454939703. The reversal of 18650454939694 is 49693945405681.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4662613734922 + ... + 4662613734925.

It is an arithmetic number, because the mean of its divisors is an integer number (6993920602386).

Almost surely, 2^{18650454939694} is an apocalyptic number.

18650454939694 is a deficient number, since it is larger than the sum of its proper divisors (9325227469850).

18650454939694 is an equidigital number, since it uses as much as digits as its factorization.

18650454939694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9325227469849.

The product of its (nonzero) digits is 1007769600, while the sum is 73.

The spelling of 18650454939694 in words is "eighteen trillion, six hundred fifty billion, four hundred fifty-four million, nine hundred thirty-nine thousand, six hundred ninety-four".