1591984113 has 8 divisors (see below), whose sum is σ = 2135356608. Its totient is φ = 1054967184.

The previous prime is 1591984109. The next prime is 1591984127. The reversal of 1591984113 is 3114891951.

It is a happy number.

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

It is not a de Polignac number, because 1591984113 - 2² = 1591984109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1591984133) 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, 1588306 + ... + 1589307.

It is an arithmetic number, because the mean of its divisors is an integer number (266919576).

Almost surely, 2^1591984113 is an apocalyptic number.

It is an amenable number.

1591984113 is a deficient number, since it is larger than the sum of its proper divisors (543372495).

1591984113 is a wasteful number, since it uses less digits than its factorization.

1591984113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177783.

The product of its digits is 38880, while the sum is 42.

The square root of 1591984113 is about 39899.6756001850. The cubic root of 1591984113 is about 1167.6506080362.

The spelling of 1591984113 in words is "one billion, five hundred ninety-one million, nine hundred eighty-four thousand, one hundred thirteen".