1012989615 has 24 divisors (see below), whose sum is σ = 1781525424. Its totient is φ = 491145600.

The previous prime is 1012989613. The next prime is 1012989619. The reversal of 1012989615 is 5169892101.

It is not a de Polignac number, because 1012989615 - 2¹ = 1012989613 is a prime.

It is a super-2 number, since 2×1012989615² = 2052295920195696450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012989611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277246 + ... + 280875.

It is an arithmetic number, because the mean of its divisors is an integer number (74230226).

Almost surely, 2^1012989615 is an apocalyptic number.

1012989615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1012989615 is a deficient number, since it is larger than the sum of its proper divisors (768535809).

1012989615 is a wasteful number, since it uses less digits than its factorization.

1012989615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558151 (or 558140 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 42.

The square root of 1012989615 is about 31827.4977810069. The cubic root of 1012989615 is about 1004.3112580100.

The spelling of 1012989615 in words is "one billion, twelve million, nine hundred eighty-nine thousand, six hundred fifteen".