1004912890 has 32 divisors (see below), whose sum is σ = 1836801360. Its totient is φ = 395771904.

The previous prime is 1004912861. The next prime is 1004912899. The reversal of 1004912890 is 982194001.

It can be written as a sum of positive squares in 8 ways, for example, as 393982801 + 610930089 = 19849^2 + 24717^2 .

It is not an unprimeable number, because it can be changed into a prime (1004912899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712506 + ... + 713914.

Almost surely, 2^1004912890 is an apocalyptic number.

1004912890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1004912890 is a deficient number, since it is larger than the sum of its proper divisors (831888470).

1004912890 is a wasteful number, since it uses less digits than its factorization.

1004912890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 1004912890 is about 31700.3610389535. The cubic root of 1004912890 is about 1001.6349554638.

The spelling of 1004912890 in words is "one billion, four million, nine hundred twelve thousand, eight hundred ninety".