1445387964 has 24 divisors (see below), whose sum is σ = 3374106960. Its totient is φ = 481576704.

The previous prime is 1445387953. The next prime is 1445387981. The reversal of 1445387964 is 4697835441.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252 + ... + 53780.

It is an arithmetic number, because the mean of its divisors is an integer number (140587790).

Almost surely, 2^1445387964 is an apocalyptic number.

It is an amenable number.

1445387964 is an abundant number, since it is smaller than the sum of its proper divisors (1928718996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1445387964 is a wasteful number, since it uses less digits than its factorization.

1445387964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54829 (or 54827 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 51.

The square root of 1445387964 is about 38018.2582978232. The cubic root of 1445387964 is about 1130.6498895599.

The spelling of 1445387964 in words is "one billion, four hundred forty-five million, three hundred eighty-seven thousand, nine hundred sixty-four".