1381975252 has 48 divisors (see below), whose sum is σ = 2829957760. Its totient is φ = 578275200.

The previous prime is 1381975249. The next prime is 1381975253. The reversal of 1381975252 is 2525791831.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1381975199 and 1381975208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381975253) 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, 234502 + ... + 240322.

Almost surely, 2^1381975252 is an apocalyptic number.

It is an amenable number.

1381975252 is an abundant number, since it is smaller than the sum of its proper divisors (1447982508).

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

1381975252 is a wasteful number, since it uses less digits than its factorization.

1381975252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032 (or 6030 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 1381975252 is about 37174.9277336218. The cubic root of 1381975252 is about 1113.8672166223.

The spelling of 1381975252 in words is "one billion, three hundred eighty-one million, nine hundred seventy-five thousand, two hundred fifty-two".