368427991 has 2 divisors, whose sum is σ = 368427992. Its totient is φ = 368427990.

The previous prime is 368427959. The next prime is 368428001. The reversal of 368427991 is 199724863.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 368427991 - 2⁵ = 368427959 is a prime.

It is equal to p_19738777 and since 368427991 and 19738777 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (368427931) 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, 184213995 + 184213996.

It is an arithmetic number, because the mean of its divisors is an integer number (184213996).

Almost surely, 2^368427991 is an apocalyptic number.

368427991 is a deficient number, since it is larger than the sum of its proper divisors (1).

368427991 is an equidigital number, since it uses as much as digits as its factorization.

368427991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 368427991 is about 19194.4781382563. The cubic root of 368427991 is about 716.8872767619.

The spelling of 368427991 in words is "three hundred sixty-eight million, four hundred twenty-seven thousand, nine hundred ninety-one".