1381975253 has 2 divisors, whose sum is σ = 1381975254. Its totient is φ = 1381975252.

The previous prime is 1381975249. The next prime is 1381975289. The reversal of 1381975253 is 3525791831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1066806244 + 315169009 = 32662^2 + 17753^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381975253 - 2² = 1381975249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381375253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690987626 + 690987627.

It is an arithmetic number, because the mean of its divisors is an integer number (690987627).

Almost surely, 2^1381975253 is an apocalyptic number.

It is an amenable number.

1381975253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381975253 is an equidigital number, since it uses as much as digits as its factorization.

1381975253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 1381975253 is about 37174.9277470717. The cubic root of 1381975253 is about 1113.8672168909.

The spelling of 1381975253 in words is "one billion, three hundred eighty-one million, nine hundred seventy-five thousand, two hundred fifty-three".