1085673820 has 48 divisors (see below), whose sum is σ = 2842495488. Its totient is φ = 338391360.

The previous prime is 1085673793. The next prime is 1085673863. The reversal of 1085673820 is 283765801.

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, 350952 + ... + 354031.

It is an arithmetic number, because the mean of its divisors is an integer number (59218656).

Almost surely, 2^1085673820 is an apocalyptic number.

1085673820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1085673820 is an abundant number, since it is smaller than the sum of its proper divisors (1756821668).

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

1085673820 is a wasteful number, since it uses less digits than its factorization.

1085673820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705010 (or 705008 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 1085673820 is about 32949.5647922700. The cubic root of 1085673820 is about 1027.7791152346.

The spelling of 1085673820 in words is "one billion, eighty-five million, six hundred seventy-three thousand, eight hundred twenty".