1393338252 has 48 divisors (see below), whose sum is σ = 3395508480. Its totient is φ = 443855808.

The previous prime is 1393338203. The next prime is 1393338257. The reversal of 1393338252 is 2528333931.

It is a self number, because there is not a number n which added to its sum of digits gives 1393338252.

It is not an unprimeable number, because it can be changed into a prime (1393338257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565399 + ... + 567857.

It is an arithmetic number, because the mean of its divisors is an integer number (70739760).

Almost surely, 2^1393338252 is an apocalyptic number.

1393338252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1393338252 is an abundant number, since it is smaller than the sum of its proper divisors (2002170228).

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

1393338252 is a wasteful number, since it uses less digits than its factorization.

1393338252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542 (or 4540 counting only the distinct ones).

The product of its digits is 116640, while the sum is 39.

The square root of 1393338252 is about 37327.4463632325. The cubic root of 1393338252 is about 1116.9117335846.

The spelling of 1393338252 in words is "one billion, three hundred ninety-three million, three hundred thirty-eight thousand, two hundred fifty-two".