1089261979582 has 24 divisors (see below), whose sum is σ = 1903209209136. Its totient is φ = 466198231968.

The previous prime is 1089261979579. The next prime is 1089261979591. The reversal of 1089261979582 is 2859791629801.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7406943 + ... + 7552570.

It is an arithmetic number, because the mean of its divisors is an integer number (79300383714).

Almost surely, 2^{1089261979582} is an apocalyptic number.

1089261979582 is a deficient number, since it is larger than the sum of its proper divisors (813947229554).

1089261979582 is a wasteful number, since it uses less digits than its factorization.

1089261979582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14960272 (or 14960265 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 67.

The spelling of 1089261979582 in words is "one trillion, eighty-nine billion, two hundred sixty-one million, nine hundred seventy-nine thousand, five hundred eighty-two".