187113908 has 6 divisors (see below), whose sum is σ = 327449346. Its totient is φ = 93556952.

The previous prime is 187113833. The next prime is 187113937. The reversal of 187113908 is 809311781.

It can be written as a sum of positive squares in only one way, i.e., 173659684 + 13454224 = 13178^2 + 3668^2 .

It is a super-2 number, since 2×187113908² = 70023229134064928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23389235 + ... + 23389242.

It is an arithmetic number, because the mean of its divisors is an integer number (54574891).

Almost surely, 2^187113908 is an apocalyptic number.

It is an amenable number.

187113908 is a deficient number, since it is larger than the sum of its proper divisors (140335438).

187113908 is a wasteful number, since it uses less digits than its factorization.

187113908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46778481 (or 46778479 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 38.

The square root of 187113908 is about 13678.9585860913. The cubic root of 187113908 is about 571.9639935279.

The spelling of 187113908 in words is "one hundred eighty-seven million, one hundred thirteen thousand, nine hundred eight".