18744722137031 has 8 divisors (see below), whose sum is σ = 21651657655824. Its totient is φ = 16038264929920.

The previous prime is 18744722136979. The next prime is 18744722137049. The reversal of 18744722137031 is 13073122744781.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18744722137031 is a prime.

It is a super-2 number, since 2×18744722137031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18744722137051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50119577720 + ... + 50119578093.

It is an arithmetic number, because the mean of its divisors is an integer number (2706457206978).

Almost surely, 2^{18744722137031} is an apocalyptic number.

18744722137031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18744722137031 is a deficient number, since it is larger than the sum of its proper divisors (2906935518793).

18744722137031 is a wasteful number, since it uses less digits than its factorization.

18744722137031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100239155841.

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 18744722137031 in words is "eighteen trillion, seven hundred forty-four billion, seven hundred twenty-two million, one hundred thirty-seven thousand, thirty-one".