361812949 has 2 divisors, whose sum is σ = 361812950. Its totient is φ = 361812948.

The previous prime is 361812917. The next prime is 361812959. The reversal of 361812949 is 949218163.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 276157924 + 85655025 = 16618^2 + 9255^2 .

It is a cyclic number.

It is not a de Polignac number, because 361812949 - 2⁵ = 361812917 is a prime.

It is a super-2 number, since 2×361812949² = 261817220128153202, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361812959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180906474 + 180906475.

It is an arithmetic number, because the mean of its divisors is an integer number (180906475).

Almost surely, 2^361812949 is an apocalyptic number.

It is an amenable number.

361812949 is a deficient number, since it is larger than the sum of its proper divisors (1).

361812949 is an equidigital number, since it uses as much as digits as its factorization.

361812949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 361812949 is about 19021.3813641386. The cubic root of 361812949 is about 712.5708223024.

The spelling of 361812949 in words is "three hundred sixty-one million, eight hundred twelve thousand, nine hundred forty-nine".