961451191 has 2 divisors, whose sum is σ = 961451192. Its totient is φ = 961451190.

The previous prime is 961451137. The next prime is 961451203. The reversal of 961451191 is 191154169.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 961451191 - 2⁷ = 961451063 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 961451191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961451791) 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 as a sum of consecutive naturals, namely, 480725595 + 480725596.

It is an arithmetic number, because the mean of its divisors is an integer number (480725596).

Almost surely, 2^961451191 is an apocalyptic number.

961451191 is a deficient number, since it is larger than the sum of its proper divisors (1).

961451191 is an equidigital number, since it uses as much as digits as its factorization.

961451191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 37.

The square root of 961451191 is about 31007.2764202211. The cubic root of 961451191 is about 986.9816551350.

It can be divided in two parts, 96145 and 1191, that added together give a cube (97336 = 46³).

The spelling of 961451191 in words is "nine hundred sixty-one million, four hundred fifty-one thousand, one hundred ninety-one".