187244641 has 2 divisors, whose sum is σ = 187244642. Its totient is φ = 187244640.

The previous prime is 187244623. The next prime is 187244683. The reversal of 187244641 is 146442781.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187115041 + 129600 = 13679^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 187244641 - 2⁷ = 187244513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 187244641.

It is not a weakly prime, because it can be changed into another prime (187244611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93622320 + 93622321.

It is an arithmetic number, because the mean of its divisors is an integer number (93622321).

Almost surely, 2^187244641 is an apocalyptic number.

It is an amenable number.

187244641 is a deficient number, since it is larger than the sum of its proper divisors (1).

187244641 is an equidigital number, since it uses as much as digits as its factorization.

187244641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 37.

The square root of 187244641 is about 13683.7363684046. The cubic root of 187244641 is about 572.0971693775.

The spelling of 187244641 in words is "one hundred eighty-seven million, two hundred forty-four thousand, six hundred forty-one".