400765163 has 2 divisors, whose sum is σ = 400765164. Its totient is φ = 400765162.

The previous prime is 400765153. The next prime is 400765199. The reversal of 400765163 is 361567004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400765163 - 2⁴ = 400765147 is a prime.

It is a super-2 number, since 2×400765163² = 321225431748833138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400765153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200382581 + 200382582.

It is an arithmetic number, because the mean of its divisors is an integer number (200382582).

Almost surely, 2^400765163 is an apocalyptic number.

400765163 is a deficient number, since it is larger than the sum of its proper divisors (1).

400765163 is an equidigital number, since it uses as much as digits as its factorization.

400765163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 400765163 is about 20019.1199357015. The cubic root of 400765163 is about 737.2758145747.

The spelling of 400765163 in words is "four hundred million, seven hundred sixty-five thousand, one hundred sixty-three".