961910111 has 2 divisors, whose sum is σ = 961910112. Its totient is φ = 961910110.

The previous prime is 961910101. The next prime is 961910113. The reversal of 961910111 is 111019169.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961910111 is a prime.

Together with 961910113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961910113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480955055 + 480955056.

It is an arithmetic number, because the mean of its divisors is an integer number (480955056).

Almost surely, 2^961910111 is an apocalyptic number.

961910111 is a deficient number, since it is larger than the sum of its proper divisors (1).

961910111 is an equidigital number, since it uses as much as digits as its factorization.

961910111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 29.

The square root of 961910111 is about 31014.6757358512. The cubic root of 961910111 is about 987.1386655576.

The spelling of 961910111 in words is "nine hundred sixty-one million, nine hundred ten thousand, one hundred eleven".