961849691 has 6 divisors (see below), whose sum is σ = 1057239876. Its totient is φ = 874408700.

The previous prime is 961849663. The next prime is 961849697. The reversal of 961849691 is 196948169.

It is a happy number.

It is not a de Polignac number, because 961849691 - 2¹⁸ = 961587547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (961849697) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3974465 + ... + 3974706.

It is an arithmetic number, because the mean of its divisors is an integer number (176206646).

Almost surely, 2^961849691 is an apocalyptic number.

961849691 is a deficient number, since it is larger than the sum of its proper divisors (95390185).

961849691 is a wasteful number, since it uses less digits than its factorization.

961849691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7949193 (or 7949182 counting only the distinct ones).

The product of its digits is 839808, while the sum is 53.

The square root of 961849691 is about 31013.7016655542. The cubic root of 961849691 is about 987.1179969018.

The spelling of 961849691 in words is "nine hundred sixty-one million, eight hundred forty-nine thousand, six hundred ninety-one".