1691116292 has 24 divisors (see below), whose sum is σ = 3025451520. Its totient is φ = 826852640.

The previous prime is 1691116289. The next prime is 1691116313. The reversal of 1691116292 is 2926111961.

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, 26318 + ... + 63834.

It is an arithmetic number, because the mean of its divisors is an integer number (126060480).

Almost surely, 2^1691116292 is an apocalyptic number.

It is an amenable number.

1691116292 is a deficient number, since it is larger than the sum of its proper divisors (1334335228).

1691116292 is a wasteful number, since it uses less digits than its factorization.

1691116292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37771 (or 37769 counting only the distinct ones).

The product of its digits is 11664, while the sum is 38.

The square root of 1691116292 is about 41123.1843611362. The cubic root of 1691116292 is about 1191.4006274930.

The spelling of 1691116292 in words is "one billion, six hundred ninety-one million, one hundred sixteen thousand, two hundred ninety-two".