1165949 has 2 divisors, whose sum is σ = 1165950. Its totient is φ = 1165948.

The previous prime is 1165943. The next prime is 1165951. The reversal of 1165949 is 9495611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592900 + 573049 = 770^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165949 - 2⁴ = 1165933 is a prime.

It is a Sophie Germain prime.

Together with 1165951, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1165943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 582974 + 582975.

It is an arithmetic number, because the mean of its divisors is an integer number (582975).

2^1165949 is an apocalyptic number.

It is an amenable number.

1165949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1165949 is an equidigital number, since it uses as much as digits as its factorization.

1165949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 1165949 is about 1079.7911835165. The cubic root of 1165949 is about 105.2510696250.

The spelling of 1165949 in words is "one million, one hundred sixty-five thousand, nine hundred forty-nine".