1811962 has 16 divisors (see below), whose sum is σ = 2906280. Its totient is φ = 844288.

The previous prime is 1811959. The next prime is 1811983. The reversal of 1811962 is 2691181.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1610361 + 201601 = 1269^2 + 449^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1811962.

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, 4464 + ... + 4852.

2^1811962 is an apocalyptic number.

1811962 is a deficient number, since it is larger than the sum of its proper divisors (1094318).

1811962 is a wasteful number, since it uses less digits than its factorization.

1811962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545.

The product of its digits is 864, while the sum is 28.

The square root of 1811962 is about 1346.0913787704. The cubic root of 1811962 is about 121.9129092678.

It can be divided in two parts, 18119 and 62, that added together give a palindrome (18181).

The spelling of 1811962 in words is "one million, eight hundred eleven thousand, nine hundred sixty-two".