1165953 has 4 divisors (see below), whose sum is σ = 1554608. Its totient is φ = 777300.

The previous prime is 1165951. The next prime is 1165991. The reversal of 1165953 is 3595611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3595611 = 3 ⋅1198537.

It is not a de Polignac number, because 1165953 - 2¹ = 1165951 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1165953.

It is not an unprimeable number, because it can be changed into a prime (1165951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194323 + ... + 194328.

It is an arithmetic number, because the mean of its divisors is an integer number (388652).

2^1165953 is an apocalyptic number.

It is an amenable number.

1165953 is a deficient number, since it is larger than the sum of its proper divisors (388655).

1165953 is an equidigital number, since it uses as much as digits as its factorization.

1165953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388654.

The product of its digits is 4050, while the sum is 30.

The square root of 1165953 is about 1079.7930357249. The cubic root of 1165953 is about 105.2511899858.

The spelling of 1165953 in words is "one million, one hundred sixty-five thousand, nine hundred fifty-three".