945564031 has 4 divisors (see below), whose sum is σ = 961590600. Its totient is φ = 929537464.

The previous prime is 945564019. The next prime is 945564049. The reversal of 945564031 is 130465549.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130465549 = 67 ⋅1947247.

It is a cyclic number.

It is not a de Polignac number, because 945564031 - 2²³ = 937175423 is a prime.

It is a super-2 number, since 2×945564031² = 1788182673441937922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945564131) 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 in 3 ways as a sum of consecutive naturals, for example, 8013196 + ... + 8013313.

It is an arithmetic number, because the mean of its divisors is an integer number (240397650).

Almost surely, 2^945564031 is an apocalyptic number.

945564031 is a deficient number, since it is larger than the sum of its proper divisors (16026569).

945564031 is a wasteful number, since it uses less digits than its factorization.

945564031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16026568.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 945564031 is about 30750.0248942989. The cubic root of 945564031 is about 981.5150905020.

The spelling of 945564031 in words is "nine hundred forty-five million, five hundred sixty-four thousand, thirty-one".