1101797985 has 16 divisors (see below), whose sum is σ = 1763827200. Its totient is φ = 587308800.

The previous prime is 1101797971. The next prime is 1101797993. The reversal of 1101797985 is 5897971011.

It is not a de Polignac number, because 1101797985 - 2⁴ = 1101797969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10441 + ... + 48089.

It is an arithmetic number, because the mean of its divisors is an integer number (110239200).

Almost surely, 2^1101797985 is an apocalyptic number.

1101797985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1101797985 is a deficient number, since it is larger than the sum of its proper divisors (662029215).

1101797985 is a wasteful number, since it uses less digits than its factorization.

1101797985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39608.

The product of its (nonzero) digits is 158760, while the sum is 48.

The square root of 1101797985 is about 33193.3424800818. The cubic root of 1101797985 is about 1032.8422408616.

The spelling of 1101797985 in words is "one billion, one hundred one million, seven hundred ninety-seven thousand, nine hundred eighty-five".