1445266641 has 32 divisors (see below), whose sum is σ = 2374865920. Its totient is φ = 761327424.

The previous prime is 1445266619. The next prime is 1445266651. The reversal of 1445266641 is 1466625441.

It is not a de Polignac number, because 1445266641 - 2⁵ = 1445266609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1445266641.

It is not an unprimeable number, because it can be changed into a prime (1445266651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231426 + ... + 237588.

It is an arithmetic number, because the mean of its divisors is an integer number (74214560).

Almost surely, 2^1445266641 is an apocalyptic number.

It is an amenable number.

1445266641 is a deficient number, since it is larger than the sum of its proper divisors (929599279).

1445266641 is a wasteful number, since it uses less digits than its factorization.

1445266641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7045.

The product of its digits is 138240, while the sum is 39.

The square root of 1445266641 is about 38016.6626757268. The cubic root of 1445266641 is about 1130.6182538381.

The spelling of 1445266641 in words is "one billion, four hundred forty-five million, two hundred sixty-six thousand, six hundred forty-one".