1445611172 has 6 divisors (see below), whose sum is σ = 2529819558. Its totient is φ = 722805584.

The previous prime is 1445611151. The next prime is 1445611183. The reversal of 1445611172 is 2711165441.

It can be written as a sum of positive squares in only one way, i.e., 884110756 + 561500416 = 29734^2 + 23696^2 .

It is a super-2 number, since 2×1445611172² = 4179583321222427168, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 180701393 + ... + 180701400.

It is an arithmetic number, because the mean of its divisors is an integer number (421636593).

Almost surely, 2^1445611172 is an apocalyptic number.

It is an amenable number.

1445611172 is a deficient number, since it is larger than the sum of its proper divisors (1084208386).

1445611172 is a wasteful number, since it uses less digits than its factorization.

1445611172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361402797 (or 361402795 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 1445611172 is about 38021.1937213970. The cubic root of 1445611172 is about 1130.7080878008.

The spelling of 1445611172 in words is "one billion, four hundred forty-five million, six hundred eleven thousand, one hundred seventy-two".