1381225936 has 10 divisors (see below), whose sum is σ = 2676125282. Its totient is φ = 690612960.

The previous prime is 1381225933. The next prime is 1381225939. The reversal of 1381225936 is 6395221831.

It is an interprime number because it is at equal distance from previous prime (1381225933) and next prime (1381225939).

It can be written as a sum of positive squares in only one way, i.e., 1072169536 + 309056400 = 32744^2 + 17580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381225933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43163295 + ... + 43163326.

Almost surely, 2^1381225936 is an apocalyptic number.

1381225936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1381225936 is a deficient number, since it is larger than the sum of its proper divisors (1294899346).

1381225936 is an equidigital number, since it uses as much as digits as its factorization.

1381225936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86326629 (or 86326623 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 1381225936 is about 37164.8481229239. The cubic root of 1381225936 is about 1113.6658648686.

The spelling of 1381225936 in words is "one billion, three hundred eighty-one million, two hundred twenty-five thousand, nine hundred thirty-six".