186143925136 has 45 divisors (see below), whose sum is σ = 390577580211. Its totient is φ = 85902226176.

The previous prime is 186143925133. The next prime is 186143925139. The reversal of 186143925136 is 631529341681.

The square root of 186143925136 is 431444.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (186143925133) and next prime (186143925139).

It can be written as a sum of positive squares in 4 ways, for example, as 16992686736 + 169151238400 = 130356^2 + 411280^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 186143925136.

It is not an unprimeable number, because it can be changed into a prime (186143925133) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22430940 + ... + 22439236.

Almost surely, 2^186143925136 is an apocalyptic number.

186143925136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

186143925136 is the 431444-th square number.

It is an amenable number.

186143925136 is an abundant number, since it is smaller than the sum of its proper divisors (204433655075).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

186143925136 is an frugal number, since it uses more digits than its factorization.

186143925136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16628 (or 8312 counting only the distinct ones).

The product of its digits is 933120, while the sum is 49.

Multiplying 186143925136 by its sum of digits (49), we get a square (9121052331664 = 3020108²).

The spelling of 186143925136 in words is "one hundred eighty-six billion, one hundred forty-three million, nine hundred twenty-five thousand, one hundred thirty-six".