186790812949 has 8 divisors (see below), whose sum is σ = 201162792600. Its totient is φ = 172419326976.

The previous prime is 186790812937. The next prime is 186790812953. The reversal of 186790812949 is 949218097681.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29840144049 + 156950668900 = 172743^2 + 396170^2 .

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

It is not a de Polignac number, because 186790812949 - 2⁵ = 186790812917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186790812919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1146249 + ... + 1299025.

It is an arithmetic number, because the mean of its divisors is an integer number (25145349075).

Almost surely, 2^186790812949 is an apocalyptic number.

It is an amenable number.

186790812949 is a deficient number, since it is larger than the sum of its proper divisors (14371979651).

186790812949 is a wasteful number, since it uses less digits than its factorization.

186790812949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246839.

The product of its (nonzero) digits is 15676416, while the sum is 64.

The spelling of 186790812949 in words is "one hundred eighty-six billion, seven hundred ninety million, eight hundred twelve thousand, nine hundred forty-nine".