4045981631 has 2 divisors, whose sum is σ = 4045981632. Its totient is φ = 4045981630.

The previous prime is 4045981613. The next prime is 4045981651. The reversal of 4045981631 is 1361895404.

Together with previous prime (4045981613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4045981631 - 2²² = 4041787327 is a prime.

It is a super-2 number, since 2×4045981631² = 32739934716778840322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4045981651) 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, 2022990815 + 2022990816.

It is an arithmetic number, because the mean of its divisors is an integer number (2022990816).

Almost surely, 2^4045981631 is an apocalyptic number.

4045981631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4045981631 is an equidigital number, since it uses as much as digits as its factorization.

4045981631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 4045981631 is about 63608.0311831769. The cubic root of 4045981631 is about 1593.4604997864.

The spelling of 4045981631 in words is "four billion, forty-five million, nine hundred eighty-one thousand, six hundred thirty-one".