166462631 has 2 divisors, whose sum is σ = 166462632. Its totient is φ = 166462630.

The previous prime is 166462627. The next prime is 166462633. The reversal of 166462631 is 136264661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166462631 - 2² = 166462627 is a prime.

It is a super-2 number, since 2×166462631² = 55419615038884322, which contains 22 as substring.

Together with 166462633, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 166462591 and 166462600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166462633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83231315 + 83231316.

It is an arithmetic number, because the mean of its divisors is an integer number (83231316).

Almost surely, 2^166462631 is an apocalyptic number.

166462631 is a deficient number, since it is larger than the sum of its proper divisors (1).

166462631 is an equidigital number, since it uses as much as digits as its factorization.

166462631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 166462631 is about 12902.0397999696. The cubic root of 166462631 is about 550.0965461369.

The spelling of 166462631 in words is "one hundred sixty-six million, four hundred sixty-two thousand, six hundred thirty-one".