187340897 has 2 divisors, whose sum is σ = 187340898. Its totient is φ = 187340896.

The previous prime is 187340869. The next prime is 187340927. The reversal of 187340897 is 798043781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180741136 + 6599761 = 13444^2 + 2569^2 .

It is a cyclic number.

It is not a de Polignac number, because 187340897 - 2⁸ = 187340641 is a prime.

It is a super-2 number, since 2×187340897² = 70193223377529218, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (187340297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93670448 + 93670449.

It is an arithmetic number, because the mean of its divisors is an integer number (93670449).

Almost surely, 2^187340897 is an apocalyptic number.

It is an amenable number.

187340897 is a deficient number, since it is larger than the sum of its proper divisors (1).

187340897 is an equidigital number, since it uses as much as digits as its factorization.

187340897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 187340897 is about 13687.2530845309. The cubic root of 187340897 is about 572.1951843796.

The spelling of 187340897 in words is "one hundred eighty-seven million, three hundred forty thousand, eight hundred ninety-seven".