1161870285 has 16 divisors (see below), whose sum is σ = 1872565056. Its totient is φ = 615139968.

The previous prime is 1161870247. The next prime is 1161870299. The reversal of 1161870285 is 5820781611.

It is not a de Polignac number, because 1161870285 - 2¹⁸ = 1161608141 is a prime.

It is a congruent number.

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, 280639 + ... + 284748.

It is an arithmetic number, because the mean of its divisors is an integer number (117035316).

Almost surely, 2^1161870285 is an apocalyptic number.

1161870285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161870285 is a deficient number, since it is larger than the sum of its proper divisors (710694771).

1161870285 is a wasteful number, since it uses less digits than its factorization.

1161870285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565532.

The product of its (nonzero) digits is 26880, while the sum is 39.

The square root of 1161870285 is about 34086.2184027504. The cubic root of 1161870285 is about 1051.2819670623.

The spelling of 1161870285 in words is "one billion, one hundred sixty-one million, eight hundred seventy thousand, two hundred eighty-five".