1381432369 has 8 divisors (see below), whose sum is σ = 1386000000. Its totient is φ = 1376873472.

The previous prime is 1381432357. The next prime is 1381432397. The reversal of 1381432369 is 9632341831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1381432369 - 2⁵ = 1381432337 is a prime.

It is a super-2 number, since 2×1381432369² = 3816710780241904322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381432309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459132 + ... + 462130.

It is an arithmetic number, because the mean of its divisors is an integer number (173250000).

Almost surely, 2^1381432369 is an apocalyptic number.

It is an amenable number.

1381432369 is a deficient number, since it is larger than the sum of its proper divisors (4567631).

1381432369 is an equidigital number, since it uses as much as digits as its factorization.

1381432369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367.

The product of its digits is 93312, while the sum is 40.

The square root of 1381432369 is about 37167.6252806122. The cubic root of 1381432369 is about 1113.7213435868.

The spelling of 1381432369 in words is "one billion, three hundred eighty-one million, four hundred thirty-two thousand, three hundred sixty-nine".