1391119085 has 16 divisors (see below), whose sum is σ = 1681430400. Its totient is φ = 1104858816.

The previous prime is 1391119073. The next prime is 1391119087. The reversal of 1391119085 is 5809111931.

It is a cyclic number.

It is not a de Polignac number, because 1391119085 - 2⁸ = 1391118829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391119087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 891536 + ... + 893094.

It is an arithmetic number, because the mean of its divisors is an integer number (105089400).

Almost surely, 2^1391119085 is an apocalyptic number.

It is an amenable number.

1391119085 is a deficient number, since it is larger than the sum of its proper divisors (290311315).

1391119085 is a wasteful number, since it uses less digits than its factorization.

1391119085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740.

The product of its (nonzero) digits is 9720, while the sum is 38.

The square root of 1391119085 is about 37297.7088438419. The cubic root of 1391119085 is about 1116.3184508175.

The spelling of 1391119085 in words is "one billion, three hundred ninety-one million, one hundred nineteen thousand, eighty-five".