1120811985 has 56 divisors (see below), whose sum is σ = 2063723904. Its totient is φ = 583783200.

The previous prime is 1120811969. The next prime is 1120811999. The reversal of 1120811985 is 5891180211.

It is not a de Polignac number, because 1120811985 - 2⁴ = 1120811969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 153160 + ... + 160310.

Almost surely, 2^1120811985 is an apocalyptic number.

1120811985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1120811985 is a deficient number, since it is larger than the sum of its proper divisors (942911919).

1120811985 is an frugal number, since it uses more digits than its factorization.

1120811985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7217 (or 7202 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 36.

The square root of 1120811985 is about 33478.5302096732. The cubic root of 1120811985 is about 1038.7497256578.

The spelling of 1120811985 in words is "one billion, one hundred twenty million, eight hundred eleven thousand, nine hundred eighty-five".