462681991 has 2 divisors, whose sum is σ = 462681992. Its totient is φ = 462681990.

The previous prime is 462681971. The next prime is 462682027. The reversal of 462681991 is 199186264.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 462681991 - 2¹⁵ = 462649223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (462681931) 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, 231340995 + 231340996.

It is an arithmetic number, because the mean of its divisors is an integer number (231340996).

Almost surely, 2^462681991 is an apocalyptic number.

462681991 is a deficient number, since it is larger than the sum of its proper divisors (1).

462681991 is an equidigital number, since it uses as much as digits as its factorization.

462681991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 462681991 is about 21510.0439562545. The cubic root of 462681991 is about 773.4416085060.

The spelling of 462681991 in words is "four hundred sixty-two million, six hundred eighty-one thousand, nine hundred ninety-one".