995951609 has 2 divisors, whose sum is σ = 995951610. Its totient is φ = 995951608.

The previous prime is 995951597. The next prime is 995951617. The reversal of 995951609 is 906159599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 904806400 + 91145209 = 30080^2 + 9547^2 .

It is an emirp because it is prime and its reverse (906159599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 995951609 - 2²⁴ = 979174393 is a prime.

It is not a weakly prime, because it can be changed into another prime (995951659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497975804 + 497975805.

It is an arithmetic number, because the mean of its divisors is an integer number (497975805).

Almost surely, 2^995951609 is an apocalyptic number.

It is an amenable number.

995951609 is a deficient number, since it is larger than the sum of its proper divisors (1).

995951609 is an equidigital number, since it uses as much as digits as its factorization.

995951609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 984150, while the sum is 53.

The square root of 995951609 is about 31558.7010030514. The cubic root of 995951609 is about 998.6487111743.

The spelling of 995951609 in words is "nine hundred ninety-five million, nine hundred fifty-one thousand, six hundred nine".