1143764079 has 16 divisors (see below), whose sum is σ = 1597688064. Its totient is φ = 726440000.

The previous prime is 1143764057. The next prime is 1143764093. The reversal of 1143764079 is 9704673411.

It is a cyclic number.

It is not a de Polignac number, because 1143764079 - 2²⁴ = 1126986863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1143764079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143764099) 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, 15702 + ... + 50339.

It is an arithmetic number, because the mean of its divisors is an integer number (99855504).

Almost surely, 2^1143764079 is an apocalyptic number.

1143764079 is a deficient number, since it is larger than the sum of its proper divisors (453923985).

1143764079 is a wasteful number, since it uses less digits than its factorization.

1143764079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66318.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 1143764079 is about 33819.5812954566. The cubic root of 1143764079 is about 1045.7924070749.

The spelling of 1143764079 in words is "one billion, one hundred forty-three million, seven hundred sixty-four thousand, seventy-nine".