1381369396 has 36 divisors (see below), whose sum is σ = 2728988164. Its totient is φ = 610917120.

The previous prime is 1381369373. The next prime is 1381369399. The reversal of 1381369396 is 6939631831.

It can be written as a sum of positive squares in 2 ways, for example, as 1278062500 + 103306896 = 35750^2 + 10164^2 .

It is a super-3 number, since 3×1381369396³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381369399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20661 + ... + 56476.

Almost surely, 2^1381369396 is an apocalyptic number.

It is an amenable number.

1381369396 is a deficient number, since it is larger than the sum of its proper divisors (1347618768).

1381369396 is a wasteful number, since it uses less digits than its factorization.

1381369396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77200 (or 77187 counting only the distinct ones).

The product of its digits is 629856, while the sum is 49.

The square root of 1381369396 is about 37166.7781224039. The cubic root of 1381369396 is about 1113.7044202248.

The spelling of 1381369396 in words is "one billion, three hundred eighty-one million, three hundred sixty-nine thousand, three hundred ninety-six".