1144623651 has 16 divisors (see below), whose sum is σ = 1620038304. Its totient is φ = 716373504.

The previous prime is 1144623647. The next prime is 1144623661. The reversal of 1144623651 is 1563264411.

It is not a de Polignac number, because 1144623651 - 2² = 1144623647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144623661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8020 + ... + 48513.

It is an arithmetic number, because the mean of its divisors is an integer number (101252394).

Almost surely, 2^1144623651 is an apocalyptic number.

1144623651 is a deficient number, since it is larger than the sum of its proper divisors (475414653).

1144623651 is a wasteful number, since it uses less digits than its factorization.

1144623651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56950.

The product of its digits is 17280, while the sum is 33.

The square root of 1144623651 is about 33832.2871086186. The cubic root of 1144623651 is about 1046.0543226190.

The spelling of 1144623651 in words is "one billion, one hundred forty-four million, six hundred twenty-three thousand, six hundred fifty-one".