1391349156 has 24 divisors (see below), whose sum is σ = 3437451360. Its totient is φ = 436501632.

The previous prime is 1391349109. The next prime is 1391349181. The reversal of 1391349156 is 6519431931.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3409966 + ... + 3410373.

It is an arithmetic number, because the mean of its divisors is an integer number (143227140).

Almost surely, 2^1391349156 is an apocalyptic number.

It is an amenable number.

1391349156 is an abundant number, since it is smaller than the sum of its proper divisors (2046102204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1391349156 is a wasteful number, since it uses less digits than its factorization.

1391349156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6820363 (or 6820361 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 1391349156 is about 37300.7929674424. The cubic root of 1391349156 is about 1116.3799884068.

The spelling of 1391349156 in words is "one billion, three hundred ninety-one million, three hundred forty-nine thousand, one hundred fifty-six".