1391252932 has 12 divisors (see below), whose sum is σ = 2451033900. Its totient is φ = 690957536.

The previous prime is 1391252909. The next prime is 1391252971. The reversal of 1391252932 is 2392521931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 400640256 + 990612676 = 20016^2 + 31474^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1391252891 and 1391252900.

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, 1166563 + ... + 1167754.

It is an arithmetic number, because the mean of its divisors is an integer number (204252825).

Almost surely, 2^1391252932 is an apocalyptic number.

It is an amenable number.

1391252932 is a deficient number, since it is larger than the sum of its proper divisors (1059780968).

1391252932 is a wasteful number, since it uses less digits than its factorization.

1391252932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334470 (or 2334468 counting only the distinct ones).

The product of its digits is 29160, while the sum is 37.

The square root of 1391252932 is about 37299.5031066099. The cubic root of 1391252932 is about 1116.3542519902.

The spelling of 1391252932 in words is "one billion, three hundred ninety-one million, two hundred fifty-two thousand, nine hundred thirty-two".