1391316197 has 8 divisors (see below), whose sum is σ = 1418493600. Its totient is φ = 1364173200.

The previous prime is 1391316187. The next prime is 1391316203. The reversal of 1391316197 is 7916131931.

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 1391316197 - 2⁶ = 1391316133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391316187) 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, 82322 + ... + 97772.

It is an arithmetic number, because the mean of its divisors is an integer number (177311700).

Almost surely, 2^1391316197 is an apocalyptic number.

It is an amenable number.

1391316197 is a deficient number, since it is larger than the sum of its proper divisors (27177403).

1391316197 is a wasteful number, since it uses less digits than its factorization.

1391316197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17203.

The product of its digits is 30618, while the sum is 41.

The square root of 1391316197 is about 37300.3511645668. The cubic root of 1391316197 is about 1116.3711732079.

The spelling of 1391316197 in words is "one billion, three hundred ninety-one million, three hundred sixteen thousand, one hundred ninety-seven".