1045991875 has 20 divisors (see below), whose sum is σ = 1319371416. Its totient is φ = 828920000.

The previous prime is 1045991833. The next prime is 1045991879. The reversal of 1045991875 is 5781995401.

1045991875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1045991875 - 2¹⁵ = 1045959107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045991879) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 59055 + ... + 74695.

Almost surely, 2^1045991875 is an apocalyptic number.

1045991875 is a deficient number, since it is larger than the sum of its proper divisors (273379541).

1045991875 is an equidigital number, since it uses as much as digits as its factorization.

1045991875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15768 (or 15753 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 49.

The square root of 1045991875 is about 32341.7976463894. The cubic root of 1045991875 is about 1015.1014240176.

The spelling of 1045991875 in words is "one billion, forty-five million, nine hundred ninety-one thousand, eight hundred seventy-five".