186922298834209 has 9 divisors (see below), whose sum is σ = 189754753868337. Its totient is φ = 184131511428084.

The previous prime is 186922298834203. The next prime is 186922298834329. The reversal of 186922298834209 is 902438892229681.

The square root of 186922298834209 is 13671953.

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

It is not a de Polignac number, because 186922298834209 - 2²³ = 186922290445601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (186922298834203) 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, 915918822 + ... + 916122880.

Almost surely, 2^{186922298834209} is an apocalyptic number.

186922298834209 is the 13671953-rd square number.

186922298834209 is the 6835977-th centered octagonal number.

It is an amenable number.

186922298834209 is a deficient number, since it is larger than the sum of its proper divisors (2832455034128).

186922298834209 is an frugal number, since it uses more digits than its factorization.

186922298834209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408252 (or 204126 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 73.

The spelling of 186922298834209 in words is "one hundred eighty-six trillion, nine hundred twenty-two billion, two hundred ninety-eight million, eight hundred thirty-four thousand, two hundred nine".