4445431156 has 12 divisors (see below), whose sum is σ = 7989761668. Its totient is φ = 2162642112.

The previous prime is 4445431153. The next prime is 4445431171. The reversal of 4445431156 is 6511345444.

It can be written as a sum of positive squares in 2 ways, for example, as 4214087056 + 231344100 = 64916^2 + 15210^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445431153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15018201 + ... + 15018496.

Almost surely, 2^4445431156 is an apocalyptic number.

It is an amenable number.

4445431156 is a deficient number, since it is larger than the sum of its proper divisors (3544330512).

4445431156 is a wasteful number, since it uses less digits than its factorization.

4445431156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30036738 (or 30036736 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The square root of 4445431156 is about 66674.0665926416. The cubic root of 4445431156 is about 1644.2630458816.

The spelling of 4445431156 in words is "four billion, four hundred forty-five million, four hundred thirty-one thousand, one hundred fifty-six".