1822151 has 4 divisors (see below), whose sum is σ = 1835400. Its totient is φ = 1808904.

The previous prime is 1822147. The next prime is 1822169. The reversal of 1822151 is 1512281.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1822151 - 2² = 1822147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6416 + ... + 6693.

It is an arithmetic number, because the mean of its divisors is an integer number (458850).

2^1822151 is an apocalyptic number.

1822151 is a deficient number, since it is larger than the sum of its proper divisors (13249).

1822151 is a wasteful number, since it uses less digits than its factorization.

1822151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13248.

The product of its digits is 160, while the sum is 20.

The square root of 1822151 is about 1349.8707345520. The cubic root of 1822151 is about 122.1409952799.

The spelling of 1822151 in words is "one million, eight hundred twenty-two thousand, one hundred fifty-one".