1369725381 has 6 divisors (see below), whose sum is σ = 1978492230. Its totient is φ = 913150248.

The previous prime is 1369725341. The next prime is 1369725403. The reversal of 1369725381 is 1835279631.

It can be written as a sum of positive squares in only one way, i.e., 1307473281 + 62252100 = 36159^2 + 7890^2 .

It is not a de Polignac number, because 1369725381 - 2²³ = 1361336773 is a prime.

It is a super-2 number, since 2×1369725381² = 3752295238711190322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369725341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76095846 + ... + 76095863.

It is an arithmetic number, because the mean of its divisors is an integer number (329748705).

Almost surely, 2^1369725381 is an apocalyptic number.

It is an amenable number.

1369725381 is a deficient number, since it is larger than the sum of its proper divisors (608766849).

1369725381 is a wasteful number, since it uses less digits than its factorization.

1369725381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152191715 (or 152191712 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 1369725381 is about 37009.8011478041. The cubic root of 1369725381 is about 1110.5663265432.

The spelling of 1369725381 in words is "one billion, three hundred sixty-nine million, seven hundred twenty-five thousand, three hundred eighty-one".