1085631615 has 48 divisors (see below), whose sum is σ = 1973881728. Its totient is φ = 551328768.

The previous prime is 1085631587. The next prime is 1085631623. The reversal of 1085631615 is 5161365801.

1085631615 is a `hidden beast` number, since 1 + 0 + 8 + 5 + 6 + 31 + 615 = 666.

It is not a de Polignac number, because 1085631615 - 2⁵ = 1085631583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1085631615.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71319 + ... + 85191.

It is an arithmetic number, because the mean of its divisors is an integer number (41122536).

Almost surely, 2^1085631615 is an apocalyptic number.

1085631615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1085631615 is a deficient number, since it is larger than the sum of its proper divisors (888250113).

1085631615 is a wasteful number, since it uses less digits than its factorization.

1085631615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13968 (or 13965 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 1085631615 is about 32948.9243375258. The cubic root of 1085631615 is about 1027.7657969374.

The spelling of 1085631615 in words is "one billion, eighty-five million, six hundred thirty-one thousand, six hundred fifteen".