1445845507 has 4 divisors (see below), whose sum is σ = 1445978880. Its totient is φ = 1445712136.

The previous prime is 1445845483. The next prime is 1445845523. The reversal of 1445845507 is 7055485441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445845507 is a prime.

It is a super-2 number, since 2×1445845507² = 4180938460224174098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445845007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48832 + ... + 72637.

It is an arithmetic number, because the mean of its divisors is an integer number (361494720).

Almost surely, 2^1445845507 is an apocalyptic number.

1445845507 is a deficient number, since it is larger than the sum of its proper divisors (133373).

1445845507 is a wasteful number, since it uses less digits than its factorization.

1445845507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133372.

The product of its (nonzero) digits is 448000, while the sum is 43.

The square root of 1445845507 is about 38024.2752330666. The cubic root of 1445845507 is about 1130.7691807994.

The spelling of 1445845507 in words is "one billion, four hundred forty-five million, eight hundred forty-five thousand, five hundred seven".