1369128719 has 8 divisors (see below), whose sum is σ = 1588073088. Its totient is φ = 1156023000.

The previous prime is 1369128661. The next prime is 1369128721. The reversal of 1369128719 is 9178219631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1369128719 is a prime.

It is a super-2 number, since 2×1369128719² = 3749026898381161922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369128749) 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, 1459157 + ... + 1460094.

It is an arithmetic number, because the mean of its divisors is an integer number (198509136).

Almost surely, 2^1369128719 is an apocalyptic number.

1369128719 is a deficient number, since it is larger than the sum of its proper divisors (218944369).

1369128719 is an equidigital number, since it uses as much as digits as its factorization.

1369128719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919325.

The product of its digits is 163296, while the sum is 47.

The square root of 1369128719 is about 37001.7394050604. The cubic root of 1369128719 is about 1110.4050462910.

The spelling of 1369128719 in words is "one billion, three hundred sixty-nine million, one hundred twenty-eight thousand, seven hundred nineteen".