1041185813 has 4 divisors (see below), whose sum is σ = 1052884620. Its totient is φ = 1029487008.

The previous prime is 1041185797. The next prime is 1041185837. The reversal of 1041185813 is 3185811401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3185811401 = 131 ⋅24319171.

It can be written as a sum of positive squares in 2 ways, for example, as 278155684 + 763030129 = 16678^2 + 27623^2 .

It is a cyclic number.

It is not a de Polignac number, because 1041185813 - 2⁴ = 1041185797 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 1041185813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1041185713) 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, 5849270 + ... + 5849447.

It is an arithmetic number, because the mean of its divisors is an integer number (263221155).

Almost surely, 2^1041185813 is an apocalyptic number.

It is an amenable number.

1041185813 is a deficient number, since it is larger than the sum of its proper divisors (11698807).

1041185813 is an equidigital number, since it uses as much as digits as its factorization.

1041185813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11698806.

The product of its (nonzero) digits is 3840, while the sum is 32.

The square root of 1041185813 is about 32267.4110055331. The cubic root of 1041185813 is about 1013.5443273011.

The spelling of 1041185813 in words is "one billion, forty-one million, one hundred eighty-five thousand, eight hundred thirteen".