1445642152 has 16 divisors (see below), whose sum is σ = 2717412660. Its totient is φ = 720998784.

The previous prime is 1445642129. The next prime is 1445642153. The reversal of 1445642152 is 2512465441.

It can be written as a sum of positive squares in 2 ways, for example, as 1428386436 + 17255716 = 37794^2 + 4154^2 .

It is a super-2 number, since 2×1445642152² = 4179762463278382208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1445642153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224413 + ... + 230764.

Almost surely, 2^1445642152 is an apocalyptic number.

It is an amenable number.

1445642152 is a deficient number, since it is larger than the sum of its proper divisors (1271770508).

1445642152 is a wasteful number, since it uses less digits than its factorization.

1445642152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455580 (or 455576 counting only the distinct ones).

The product of its digits is 38400, while the sum is 34.

The square root of 1445642152 is about 38021.6011235718. The cubic root of 1445642152 is about 1130.7161649119.

The spelling of 1445642152 in words is "one billion, four hundred forty-five million, six hundred forty-two thousand, one hundred fifty-two".