1138764 has 24 divisors (see below), whose sum is σ = 2899008. Its totient is φ = 345040.

The previous prime is 1138757. The next prime is 1138771. The reversal of 1138764 is 4678311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1138757) and next prime (1138771).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4182 + ... + 4445.

It is an arithmetic number, because the mean of its divisors is an integer number (120792).

2^1138764 is an apocalyptic number.

It is an amenable number.

1138764 is an abundant number, since it is smaller than the sum of its proper divisors (1760244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1138764 is a wasteful number, since it uses less digits than its factorization.

1138764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8645 (or 8643 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 1138764 is about 1067.1288581985. The cubic root of 1138764 is about 104.4266252316.

The spelling of 1138764 in words is "one million, one hundred thirty-eight thousand, seven hundred sixty-four".