1012989105 has 32 divisors (see below), whose sum is σ = 1803784320. Its totient is φ = 539386560.

The previous prime is 1012989059. The next prime is 1012989143. The reversal of 1012989105 is 5019892101.

It is not a de Polignac number, because 1012989105 - 2⁶ = 1012989041 is a prime.

It is a super-2 number, since 2×1012989105² = 2052293853697402050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1012989105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82410 + ... + 93900.

It is an arithmetic number, because the mean of its divisors is an integer number (56368260).

Almost surely, 2^1012989105 is an apocalyptic number.

1012989105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1012989105 is a deficient number, since it is larger than the sum of its proper divisors (790795215).

1012989105 is a wasteful number, since it uses less digits than its factorization.

1012989105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12158 (or 12152 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 1012989105 is about 31827.4897690660. The cubic root of 1012989105 is about 1004.3110894664.

The spelling of 1012989105 in words is "one billion, twelve million, nine hundred eighty-nine thousand, one hundred five".