1045499280 has 120 divisors (see below), whose sum is σ = 3770240832. Its totient is φ = 238968576.

The previous prime is 1045499261. The next prime is 1045499309. The reversal of 1045499280 is 829945401.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 32692 + ... + 56211.

Almost surely, 2^1045499280 is an apocalyptic number.

1045499280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1045499280 is an abundant number, since it is smaller than the sum of its proper divisors (2724741552).

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

1045499280 is a wasteful number, since it uses less digits than its factorization.

1045499280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88933 (or 88920 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1045499280 is about 32334.1812947228. The cubic root of 1045499280 is about 1014.9420498028.

The spelling of 1045499280 in words is "one billion, forty-five million, four hundred ninety-nine thousand, two hundred eighty".