366990731 has 2 divisors, whose sum is σ = 366990732. Its totient is φ = 366990730.

The previous prime is 366990707. The next prime is 366990739. The reversal of 366990731 is 137099663.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 366990731 - 2⁶ = 366990667 is a prime.

It is a super-2 number, since 2×366990731² = 269364393279828722, which contains 22 as substring.

It is a Chen prime.

It is equal to p_19665971 and since 366990731 and 19665971 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (366990739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183495365 + 183495366.

It is an arithmetic number, because the mean of its divisors is an integer number (183495366).

Almost surely, 2^366990731 is an apocalyptic number.

366990731 is a deficient number, since it is larger than the sum of its proper divisors (1).

366990731 is an equidigital number, since it uses as much as digits as its factorization.

366990731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 366990731 is about 19157.0021402097. The cubic root of 366990731 is about 715.9538549737.

The spelling of 366990731 in words is "three hundred sixty-six million, nine hundred ninety thousand, seven hundred thirty-one".