187418961 has 8 divisors (see below), whose sum is σ = 277657760. Its totient is φ = 124945956.

The previous prime is 187418951. The next prime is 187418969. The reversal of 187418961 is 169814781.

It is a happy number.

187418961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 187418961 - 2⁵ = 187418929 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (187418969) 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, 3470695 + ... + 3470748.

It is an arithmetic number, because the mean of its divisors is an integer number (34707220).

Almost surely, 2^187418961 is an apocalyptic number.

It is an amenable number.

187418961 is a deficient number, since it is larger than the sum of its proper divisors (90238799).

187418961 is an equidigital number, since it uses as much as digits as its factorization.

187418961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6941452 (or 6941446 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 187418961 is about 13690.1044919314. The cubic root of 187418961 is about 572.2746502851.

The spelling of 187418961 in words is "one hundred eighty-seven million, four hundred eighteen thousand, nine hundred sixty-one".