863091137 has 2 divisors, whose sum is σ = 863091138. Its totient is φ = 863091136.

The previous prime is 863091133. The next prime is 863091197. The reversal of 863091137 is 731190368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 836424241 + 26666896 = 28921^2 + 5164^2 .

It is a cyclic number.

It is not a de Polignac number, because 863091137 - 2² = 863091133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 863091137.

It is not a weakly prime, because it can be changed into another prime (863091133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431545568 + 431545569.

It is an arithmetic number, because the mean of its divisors is an integer number (431545569).

Almost surely, 2^863091137 is an apocalyptic number.

It is an amenable number.

863091137 is a deficient number, since it is larger than the sum of its proper divisors (1).

863091137 is an equidigital number, since it uses as much as digits as its factorization.

863091137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 863091137 is about 29378.4127719657. The cubic root of 863091137 is about 952.1065487135.

The spelling of 863091137 in words is "eight hundred sixty-three million, ninety-one thousand, one hundred thirty-seven".