1012508889 has 16 divisors (see below), whose sum is σ = 1543821312. Its totient is φ = 578220048.

The previous prime is 1012508869. The next prime is 1012508909. The reversal of 1012508889 is 9888052101.

It is an interprime number because it is at equal distance from previous prime (1012508869) and next prime (1012508909).

It is not a de Polignac number, because 1012508889 - 2⁹ = 1012508377 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012508889.

It is not an unprimeable number, because it can be changed into a prime (1012508869) 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, 22192 + ... + 50174.

It is an arithmetic number, because the mean of its divisors is an integer number (96488832).

Almost surely, 2^1012508889 is an apocalyptic number.

It is an amenable number.

1012508889 is a deficient number, since it is larger than the sum of its proper divisors (531312423).

1012508889 is a wasteful number, since it uses less digits than its factorization.

1012508889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29716.

The product of its (nonzero) digits is 46080, while the sum is 42.

The square root of 1012508889 is about 31819.9448302476. The cubic root of 1012508889 is about 1004.1523636774.

The spelling of 1012508889 in words is "one billion, twelve million, five hundred eight thousand, eight hundred eighty-nine".