1081630 has 16 divisors (see below), whose sum is σ = 2124144. Its totient is φ = 393280.

The previous prime is 1081583. The next prime is 1081631. The reversal of 1081630 is 361801.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1081598 and 1081607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4807 + ... + 5026.

It is an arithmetic number, because the mean of its divisors is an integer number (132759).

2^1081630 is an apocalyptic number.

1081630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1081630 is a deficient number, since it is larger than the sum of its proper divisors (1042514).

1081630 is a wasteful number, since it uses less digits than its factorization.

1081630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9851.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1081630 is about 1040.0144229769. The cubic root of 1081630 is about 102.6501467957.

It can be divided in two parts, 1081 and 630, that added together give a triangular number (1711 = T₅₈).

The spelling of 1081630 in words is "one million, eighty-one thousand, six hundred thirty".