1083634420 has 96 divisors (see below), whose sum is σ = 2602285056. Its totient is φ = 375196800.

The previous prime is 1083634339. The next prime is 1083634477. The reversal of 1083634420 is 244363801.

1083634420 = 6853² + 6854² + ... + 6875².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1674537 + ... + 1675183.

It is an arithmetic number, because the mean of its divisors is an integer number (27107136).

Almost surely, 2^1083634420 is an apocalyptic number.

1083634420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1083634420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301142528).

1083634420 is an abundant number, since it is smaller than the sum of its proper divisors (1518650636).

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

1083634420 is a wasteful number, since it uses less digits than its factorization.

1083634420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1083634420 is about 32918.6029472698. The cubic root of 1083634420 is about 1027.1351629062.

The spelling of 1083634420 in words is "one billion, eighty-three million, six hundred thirty-four thousand, four hundred twenty".