961082491 has 16 divisors (see below), whose sum is σ = 1045949440. Its totient is φ = 879737760.

The previous prime is 961082477. The next prime is 961082497. The reversal of 961082491 is 194280169.

It is a cyclic number.

It is not a de Polignac number, because 961082491 - 2⁵ = 961082459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961082497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660721 + ... + 662173.

It is an arithmetic number, because the mean of its divisors is an integer number (65371840).

Almost surely, 2^961082491 is an apocalyptic number.

961082491 is a deficient number, since it is larger than the sum of its proper divisors (84866949).

961082491 is a wasteful number, since it uses less digits than its factorization.

961082491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 961082491 is about 31001.3304714491. The cubic root of 961082491 is about 986.8554755064.

The spelling of 961082491 in words is "nine hundred sixty-one million, eighty-two thousand, four hundred ninety-one".