1185641 has 4 divisors (see below), whose sum is σ = 1188432. Its totient is φ = 1182852.

The previous prime is 1185637. The next prime is 1185643. The reversal of 1185641 is 1465811.

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: 1465811 = 1013 ⋅1447.

It is a cyclic number.

It is not a de Polignac number, because 1185641 - 2² = 1185637 is a prime.

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 1185641.

It is not an unprimeable number, because it can be changed into a prime (1185643) 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, 611 + ... + 1656.

It is an arithmetic number, because the mean of its divisors is an integer number (297108).

2^1185641 is an apocalyptic number.

It is an amenable number.

1185641 is a deficient number, since it is larger than the sum of its proper divisors (2791).

1185641 is an equidigital number, since it uses as much as digits as its factorization.

1185641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790.

The product of its digits is 960, while the sum is 26.

The square root of 1185641 is about 1088.8714341005. The cubic root of 1185641 is about 105.8403018262.

The spelling of 1185641 in words is "one million, one hundred eighty-five thousand, six hundred forty-one".