1391071104 has 128 divisors (see below), whose sum is σ = 4347280800. Its totient is φ = 436396032.

The previous prime is 1391071051. The next prime is 1391071127. The reversal of 1391071104 is 4011701931.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46914 + ... + 70590.

Almost surely, 2^1391071104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1391071104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2173640400).

1391071104 is an abundant number, since it is smaller than the sum of its proper divisors (2956209696).

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

1391071104 is a wasteful number, since it uses less digits than its factorization.

1391071104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23717 (or 23699 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 1391071104 is about 37297.0656218422. The cubic root of 1391071104 is about 1116.3056163803.

The spelling of 1391071104 in words is "one billion, three hundred ninety-one million, seventy-one thousand, one hundred four".