119181961 has 2 divisors, whose sum is σ = 119181962. Its totient is φ = 119181960.

The previous prime is 119181943. The next prime is 119181973. The reversal of 119181961 is 169181911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102900736 + 16281225 = 10144^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 119181961 - 2⁷ = 119181833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 119181961.

It is not a weakly prime, because it can be changed into another prime (119181761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59590980 + 59590981.

It is an arithmetic number, because the mean of its divisors is an integer number (59590981).

Almost surely, 2^119181961 is an apocalyptic number.

It is an amenable number.

119181961 is a deficient number, since it is larger than the sum of its proper divisors (1).

119181961 is an equidigital number, since it uses as much as digits as its factorization.

119181961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 37.

The square root of 119181961 is about 10917.0490976271. The cubic root of 119181961 is about 492.1190485156.

The spelling of 119181961 in words is "one hundred nineteen million, one hundred eighty-one thousand, nine hundred sixty-one".