1085634440 has 32 divisors (see below), whose sum is σ = 2664740160. Its totient is φ = 394776000.

The previous prime is 1085634437. The next prime is 1085634469. The reversal of 1085634440 is 444365801.

It is a super-2 number, since 2×1085634440² = 2357204274628227200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1085634440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1233236 + ... + 1234115.

It is an arithmetic number, because the mean of its divisors is an integer number (83273130).

Almost surely, 2^1085634440 is an apocalyptic number.

1085634440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1085634440 is an abundant number, since it is smaller than the sum of its proper divisors (1579105720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1085634440 is a wasteful number, since it uses less digits than its factorization.

1085634440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467373 (or 2467369 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 1085634440 is about 32948.9672068792. The cubic root of 1085634440 is about 1027.7666884110.

The spelling of 1085634440 in words is "one billion, eighty-five million, six hundred thirty-four thousand, four hundred forty".