1139861852 has 12 divisors (see below), whose sum is σ = 1995067536. Its totient is φ = 569842560.

The previous prime is 1139861843. The next prime is 1139861867. The reversal of 1139861852 is 2581689311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13193 + ... + 49535.

It is an arithmetic number, because the mean of its divisors is an integer number (166255628).

Almost surely, 2^1139861852 is an apocalyptic number.

It is an amenable number.

1139861852 is a deficient number, since it is larger than the sum of its proper divisors (855205684).

1139861852 is a wasteful number, since it uses less digits than its factorization.

1139861852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44188 (or 44186 counting only the distinct ones).

The product of its digits is 103680, while the sum is 44.

The square root of 1139861852 is about 33761.8401749668. The cubic root of 1139861852 is about 1044.6017276121.

The spelling of 1139861852 in words is "one billion, one hundred thirty-nine million, eight hundred sixty-one thousand, eight hundred fifty-two".