1011979564 has 12 divisors (see below), whose sum is σ = 1800981000. Its totient is φ = 497413568.

The previous prime is 1011979547. The next prime is 1011979583. The reversal of 1011979564 is 4659791101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011979564.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2143789 + ... + 2144260.

It is an arithmetic number, because the mean of its divisors is an integer number (150081750).

Almost surely, 2^1011979564 is an apocalyptic number.

It is an amenable number.

1011979564 is a deficient number, since it is larger than the sum of its proper divisors (789001436).

1011979564 is a wasteful number, since it uses less digits than its factorization.

1011979564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4288112 (or 4288110 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 1011979564 is about 31811.6262394741. The cubic root of 1011979564 is about 1003.9773477321.

The spelling of 1011979564 in words is "one billion, eleven million, nine hundred seventy-nine thousand, five hundred sixty-four".