1085631538 has 16 divisors (see below), whose sum is σ = 1755966240. Its totient is φ = 501703200.

The previous prime is 1085631529. The next prime is 1085631551. The reversal of 1085631538 is 8351365801.

It is a self number, because there is not a number n which added to its sum of digits gives 1085631538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346848 + ... + 349963.

It is an arithmetic number, because the mean of its divisors is an integer number (109747890).

Almost surely, 2^1085631538 is an apocalyptic number.

1085631538 is a deficient number, since it is larger than the sum of its proper divisors (670334702).

1085631538 is a wasteful number, since it uses less digits than its factorization.

1085631538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696873.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 1085631538 is about 32948.9231690506. The cubic root of 1085631538 is about 1027.7657726388.

The spelling of 1085631538 in words is "one billion, eighty-five million, six hundred thirty-one thousand, five hundred thirty-eight".