445978156 has 36 divisors (see below), whose sum is σ = 865781784. Its totient is φ = 200803200.

The previous prime is 445978151. The next prime is 445978171. The reversal of 445978156 is 651879544.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (445978151) 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 in 11 ways as a sum of consecutive naturals, for example, 19671 + ... + 35761.

It is an arithmetic number, because the mean of its divisors is an integer number (24049494).

Almost surely, 2^445978156 is an apocalyptic number.

It is an amenable number.

445978156 is a deficient number, since it is larger than the sum of its proper divisors (419803628).

445978156 is a wasteful number, since it uses less digits than its factorization.

445978156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16162 (or 16147 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 49.

The square root of 445978156 is about 21118.1949039211. The cubic root of 445978156 is about 764.0196512767.

The spelling of 445978156 in words is "four hundred forty-five million, nine hundred seventy-eight thousand, one hundred fifty-six".