1391877146 has 8 divisors (see below), whose sum is σ = 2277617184. Its totient is φ = 632671420.

The previous prime is 1391877133. The next prime is 1391877163. The reversal of 1391877146 is 6417781931.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1391877146.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31633550 + ... + 31633593.

It is an arithmetic number, because the mean of its divisors is an integer number (284702148).

Almost surely, 2^1391877146 is an apocalyptic number.

1391877146 is a deficient number, since it is larger than the sum of its proper divisors (885740038).

1391877146 is a wasteful number, since it uses less digits than its factorization.

1391877146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63267156.

The product of its digits is 254016, while the sum is 47.

The square root of 1391877146 is about 37307.8697596097. The cubic root of 1391877146 is about 1116.5211853937.

The spelling of 1391877146 in words is "one billion, three hundred ninety-one million, eight hundred seventy-seven thousand, one hundred forty-six".