1045183391 has 4 divisors (see below), whose sum is σ = 1194495312. Its totient is φ = 895871472.

The previous prime is 1045183387. The next prime is 1045183397. The reversal of 1045183391 is 1933815401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1933815401 = 7 ⋅276259343.

It is a cyclic number.

It is not a de Polignac number, because 1045183391 - 2² = 1045183387 is a prime.

It is a super-3 number, since 3×1045183391³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045183397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74655950 + ... + 74655963.

It is an arithmetic number, because the mean of its divisors is an integer number (298623828).

Almost surely, 2^1045183391 is an apocalyptic number.

1045183391 is a deficient number, since it is larger than the sum of its proper divisors (149311921).

1045183391 is an equidigital number, since it uses as much as digits as its factorization.

1045183391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149311920.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1045183391 is about 32329.2961723574. The cubic root of 1045183391 is about 1014.8398207114.

Adding to 1045183391 its reverse (1933815401), we get a palindrome (2978998792).

The spelling of 1045183391 in words is "one billion, forty-five million, one hundred eighty-three thousand, three hundred ninety-one".