18899275147636 has 24 divisors (see below), whose sum is σ = 37713033214920. Its totient is φ = 8209639882752.

The previous prime is 18899275147633. The next prime is 18899275147703. The reversal of 18899275147636 is 63674157299881.

It can be written as a sum of positive squares in 4 ways, for example, as 766752414736 + 18132522732900 = 875644^2 + 4258230^2 .

It is a super-2 number, since 2×18899275147636² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18899275147631) 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, 10689634381 + ... + 10689636148.

It is an arithmetic number, because the mean of its divisors is an integer number (1571376383955).

Almost surely, 2^{18899275147636} is an apocalyptic number.

It is an amenable number.

18899275147636 is a deficient number, since it is larger than the sum of its proper divisors (18813758067284).

18899275147636 is a wasteful number, since it uses less digits than its factorization.

18899275147636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21379270563 (or 21379270561 counting only the distinct ones).

The product of its digits is 1097349120, while the sum is 76.

The spelling of 18899275147636 in words is "eighteen trillion, eight hundred ninety-nine billion, two hundred seventy-five million, one hundred forty-seven thousand, six hundred thirty-six".