1140944731 has 4 divisors (see below), whose sum is σ = 1146352264. Its totient is φ = 1135537200.

The previous prime is 1140944729. The next prime is 1140944741. The reversal of 1140944731 is 1374490411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1140944731 - 2¹ = 1140944729 is a prime.

It is a super-2 number, since 2×1140944731² = 2603509758393324722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140944711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2703450 + ... + 2703871.

It is an arithmetic number, because the mean of its divisors is an integer number (286588066).

Almost surely, 2^1140944731 is an apocalyptic number.

1140944731 is a deficient number, since it is larger than the sum of its proper divisors (5407533).

1140944731 is an equidigital number, since it uses as much as digits as its factorization.

1140944731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5407532.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1140944731 is about 33777.8733936878. The cubic root of 1140944731 is about 1044.9324165903.

The spelling of 1140944731 in words is "one billion, one hundred forty million, nine hundred forty-four thousand, seven hundred thirty-one".