18949433264641 has 8 divisors (see below), whose sum is σ = 20820829226400. Its totient is φ = 17102824004640.

The previous prime is 18949433264639. The next prime is 18949433264647. The reversal of 18949433264641 is 14646233494981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18949433264641 - 2¹ = 18949433264639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18949433264647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6196673836 + ... + 6196676893.

It is an arithmetic number, because the mean of its divisors is an integer number (2602603653300).

Almost surely, 2^{18949433264641} is an apocalyptic number.

18949433264641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18949433264641 is a deficient number, since it is larger than the sum of its proper divisors (1871395961759).

18949433264641 is a wasteful number, since it uses less digits than its factorization.

18949433264641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12393350879.

The product of its digits is 107495424, while the sum is 64.

The spelling of 18949433264641 in words is "eighteen trillion, nine hundred forty-nine billion, four hundred thirty-three million, two hundred sixty-four thousand, six hundred forty-one".