1391616383 has 4 divisors (see below), whose sum is σ = 1425558288. Its totient is φ = 1357674480.

The previous prime is 1391616367. The next prime is 1391616397. The reversal of 1391616383 is 3836161931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1391616383 - 2⁴ = 1391616367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 33941863 = 1391616383 / (1 + 3 + 9 + 1 + 6 + 1 + 6 + 3 + 8 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1391616383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391616983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16970891 + ... + 16970972.

It is an arithmetic number, because the mean of its divisors is an integer number (356389572).

Almost surely, 2^1391616383 is an apocalyptic number.

1391616383 is a deficient number, since it is larger than the sum of its proper divisors (33941905).

1391616383 is an equidigital number, since it uses as much as digits as its factorization.

1391616383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33941904.

The product of its digits is 69984, while the sum is 41.

The square root of 1391616383 is about 37304.3748506794. The cubic root of 1391616383 is about 1116.4514556769.

The spelling of 1391616383 in words is "one billion, three hundred ninety-one million, six hundred sixteen thousand, three hundred eighty-three".