1045249919 has 12 divisors (see below), whose sum is σ = 1216429704. Its totient is φ = 895540464.

The previous prime is 1045249897. The next prime is 1045249921. The reversal of 1045249919 is 9199425401.

It is not a de Polignac number, because 1045249919 - 2⁸ = 1045249663 is a prime.

It is a super-2 number, since 2×1045249919² = 2185094786339013122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1045249919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045249969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 218477 + ... + 223209.

It is an arithmetic number, because the mean of its divisors is an integer number (101369142).

Almost surely, 2^1045249919 is an apocalyptic number.

1045249919 is a deficient number, since it is larger than the sum of its proper divisors (171179785).

1045249919 is an equidigital number, since it uses as much as digits as its factorization.

1045249919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9254 (or 9247 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1045249919 is about 32330.3250679606. The cubic root of 1045249919 is about 1014.8613524451.

The spelling of 1045249919 in words is "one billion, forty-five million, two hundred forty-nine thousand, nine hundred nineteen".