1045192785 has 48 divisors (see below), whose sum is σ = 2094998976. Its totient is φ = 441044352.

The previous prime is 1045192783. The next prime is 1045192789. The reversal of 1045192785 is 5872915401.

It is not a de Polignac number, because 1045192785 - 2¹ = 1045192783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1045192781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45139 + ... + 64248.

It is an arithmetic number, because the mean of its divisors is an integer number (43645812).

Almost surely, 2^1045192785 is an apocalyptic number.

1045192785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1045192785 is an abundant number, since it is smaller than the sum of its proper divisors (1049806191).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1045192785 is a wasteful number, since it uses less digits than its factorization.

1045192785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109422 (or 109415 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 42.

The square root of 1045192785 is about 32329.4414582127. The cubic root of 1045192785 is about 1014.8428611274.

The spelling of 1045192785 in words is "one billion, forty-five million, one hundred ninety-two thousand, seven hundred eighty-five".