187340761 has 2 divisors, whose sum is σ = 187340762. Its totient is φ = 187340760.

The previous prime is 187340737. The next prime is 187340801. The reversal of 187340761 is 167043781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113294736 + 74046025 = 10644^2 + 8605^2 .

It is a cyclic number.

It is not a de Polignac number, because 187340761 - 2⁵ = 187340729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 187340761.

It is not a weakly prime, because it can be changed into another prime (187340701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93670380 + 93670381.

It is an arithmetic number, because the mean of its divisors is an integer number (93670381).

Almost surely, 2^187340761 is an apocalyptic number.

It is an amenable number.

187340761 is a deficient number, since it is larger than the sum of its proper divisors (1).

187340761 is an equidigital number, since it uses as much as digits as its factorization.

187340761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 187340761 is about 13687.2481164038. The cubic root of 187340761 is about 572.1950459180.

The spelling of 187340761 in words is "one hundred eighty-seven million, three hundred forty thousand, seven hundred sixty-one".