996259181 has 2 divisors, whose sum is σ = 996259182. Its totient is φ = 996259180.

The previous prime is 996259171. The next prime is 996259207. The reversal of 996259181 is 181952699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 835730281 + 160528900 = 28909^2 + 12670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-996259181 is a prime.

It is a super-2 number, since 2×996259181² = 1985064711453581522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (996259171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498129590 + 498129591.

It is an arithmetic number, because the mean of its divisors is an integer number (498129591).

Almost surely, 2^996259181 is an apocalyptic number.

It is an amenable number.

996259181 is a deficient number, since it is larger than the sum of its proper divisors (1).

996259181 is an equidigital number, since it uses as much as digits as its factorization.

996259181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 50.

The square root of 996259181 is about 31563.5736411453. The cubic root of 996259181 is about 998.7515022354.

The spelling of 996259181 in words is "nine hundred ninety-six million, two hundred fifty-nine thousand, one hundred eighty-one".