1144257723 has 48 divisors (see below), whose sum is σ = 1935338496. Its totient is φ = 637891200.

The previous prime is 1144257707. The next prime is 1144257769. The reversal of 1144257723 is 3277524411.

It is not a de Polignac number, because 1144257723 - 2⁴ = 1144257707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144257773) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1779240 + ... + 1779882.

It is an arithmetic number, because the mean of its divisors is an integer number (40319552).

Almost surely, 2^1144257723 is an apocalyptic number.

1144257723 is a deficient number, since it is larger than the sum of its proper divisors (791080773).

1144257723 is a wasteful number, since it uses less digits than its factorization.

1144257723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304 (or 1301 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 1144257723 is about 33826.8787061414. The cubic root of 1144257723 is about 1045.9428387079.

The spelling of 1144257723 in words is "one billion, one hundred forty-four million, two hundred fifty-seven thousand, seven hundred twenty-three".