187623361 has 2 divisors, whose sum is σ = 187623362. Its totient is φ = 187623360.

The previous prime is 187623353. The next prime is 187623427. The reversal of 187623361 is 163326781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186732225 + 891136 = 13665^2 + 944^2 .

It is an emirp because it is prime and its reverse (163326781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 187623361 - 2³ = 187623353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 187623361.

It is not a weakly prime, because it can be changed into another prime (187123361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93811680 + 93811681.

It is an arithmetic number, because the mean of its divisors is an integer number (93811681).

Almost surely, 2^187623361 is an apocalyptic number.

It is an amenable number.

187623361 is a deficient number, since it is larger than the sum of its proper divisors (1).

187623361 is an equidigital number, since it uses as much as digits as its factorization.

187623361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 187623361 is about 13697.5677037933. The cubic root of 187623361 is about 572.4826165085.

The spelling of 187623361 in words is "one hundred eighty-seven million, six hundred twenty-three thousand, three hundred sixty-one".