1140975987 has 8 divisors (see below), whose sum is σ = 1570375680. Its totient is φ = 736113480.

The previous prime is 1140975943. The next prime is 1140976007. The reversal of 1140975987 is 7895790411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1140975987 - 2¹⁶ = 1140910451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1140975917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6134187 + ... + 6134372.

It is an arithmetic number, because the mean of its divisors is an integer number (196296960).

Almost surely, 2^1140975987 is an apocalyptic number.

1140975987 is a deficient number, since it is larger than the sum of its proper divisors (429399693).

1140975987 is a wasteful number, since it uses less digits than its factorization.

1140975987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12268593.

The product of its (nonzero) digits is 635040, while the sum is 51.

The square root of 1140975987 is about 33778.3360602621. The cubic root of 1140975987 is about 1044.9419584225.

The spelling of 1140975987 in words is "one billion, one hundred forty million, nine hundred seventy-five thousand, nine hundred eighty-seven".