18664998741 has 6 divisors (see below), whose sum is σ = 26960553750. Its totient is φ = 12443332488.

The previous prime is 18664998739. The next prime is 18664998769. The reversal of 18664998741 is 14789946681.

18664998741 is a `hidden beast` number, since 1 + 8 + 66 + 499 + 87 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15711619716 + 2953379025 = 125346^2 + 54345^2 .

It is not a de Polignac number, because 18664998741 - 2¹ = 18664998739 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18664998721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1036944366 + ... + 1036944383.

It is an arithmetic number, because the mean of its divisors is an integer number (4493425625).

Almost surely, 2^18664998741 is an apocalyptic number.

It is an amenable number.

18664998741 is a deficient number, since it is larger than the sum of its proper divisors (8295555009).

18664998741 is a wasteful number, since it uses less digits than its factorization.

18664998741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073888755 (or 2073888752 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

It can be divided in two parts, 186649 and 98741, that added together give a triangular number (285390 = T₇₅₅).

The spelling of 18664998741 in words is "eighteen billion, six hundred sixty-four million, nine hundred ninety-eight thousand, seven hundred forty-one".