1091686536 has 48 divisors (see below), whose sum is σ = 3085205760. Its totient is φ = 348073440.

The previous prime is 1091686523. The next prime is 1091686567. The reversal of 1091686536 is 6356861901.

1091686536 is a `hidden beast` number, since 109 + 1 + 6 + 8 + 6 + 536 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1091686491 and 1091686500.

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, 327960 + ... + 331271.

It is an arithmetic number, because the mean of its divisors is an integer number (64275120).

Almost surely, 2^1091686536 is an apocalyptic number.

It is an amenable number.

1091686536 is an abundant number, since it is smaller than the sum of its proper divisors (1993519224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1091686536 is a wasteful number, since it uses less digits than its factorization.

1091686536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659266 (or 659259 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1091686536 is about 33040.6800172151. The cubic root of 1091686536 is about 1029.6729838161.

The spelling of 1091686536 in words is "one billion, ninety-one million, six hundred eighty-six thousand, five hundred thirty-six".