995258861 has 2 divisors, whose sum is σ = 995258862. Its totient is φ = 995258860.

The previous prime is 995258851. The next prime is 995258881. The reversal of 995258861 is 168852599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 917484100 + 77774761 = 30290^2 + 8819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-995258861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (995258851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497629430 + 497629431.

It is an arithmetic number, because the mean of its divisors is an integer number (497629431).

Almost surely, 2^995258861 is an apocalyptic number.

It is an amenable number.

995258861 is a deficient number, since it is larger than the sum of its proper divisors (1).

995258861 is an equidigital number, since it uses as much as digits as its factorization.

995258861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1555200, while the sum is 53.

The square root of 995258861 is about 31547.7235470327. The cubic root of 995258861 is about 998.4171161340.

The spelling of 995258861 in words is "nine hundred ninety-five million, two hundred fifty-eight thousand, eight hundred sixty-one".