1144626645 has 16 divisors (see below), whose sum is σ = 1834704000. Its totient is φ = 609367104.

The previous prime is 1144626629. The next prime is 1144626653. The reversal of 1144626645 is 5466264411.

It is not a de Polignac number, because 1144626645 - 2⁴ = 1144626629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60145 + ... + 76854.

It is an arithmetic number, because the mean of its divisors is an integer number (114669000).

Almost surely, 2^1144626645 is an apocalyptic number.

1144626645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1144626645 is a deficient number, since it is larger than the sum of its proper divisors (690077355).

1144626645 is a wasteful number, since it uses less digits than its factorization.

1144626645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137564.

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

The square root of 1144626645 is about 33832.3313562633. The cubic root of 1144626645 is about 1046.0552346754.

The spelling of 1144626645 in words is "one billion, one hundred forty-four million, six hundred twenty-six thousand, six hundred forty-five".