1445961920 has 56 divisors (see below), whose sum is σ = 3708068784. Its totient is φ = 533892096.

The previous prime is 1445961919. The next prime is 1445961943. The reversal of 1445961920 is 291695441.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 169634 + ... + 177953.

It is an arithmetic number, because the mean of its divisors is an integer number (66215514).

Almost surely, 2^1445961920 is an apocalyptic number.

1445961920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445961920 is an abundant number, since it is smaller than the sum of its proper divisors (2262106864).

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

1445961920 is a wasteful number, since it uses less digits than its factorization.

1445961920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347617 (or 347607 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1445961920 is about 38025.8059743643. The cubic root of 1445961920 is about 1130.7995281404.

The spelling of 1445961920 in words is "one billion, four hundred forty-five million, nine hundred sixty-one thousand, nine hundred twenty".