1901022 has 16 divisors (see below), whose sum is σ = 3840912. Its totient is φ = 627200.

The previous prime is 1901021. The next prime is 1901027. The reversal of 1901022 is 2201091.

It is a happy number.

It is a super-2 number, since 2×1901022² = 7227769288968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1900992 and 1901010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 963 + ... + 2174.

It is an arithmetic number, because the mean of its divisors is an integer number (240057).

2^1901022 is an apocalyptic number.

1901022 is an abundant number, since it is smaller than the sum of its proper divisors (1939890).

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

1901022 is a wasteful number, since it uses less digits than its factorization.

1901022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1901022 is about 1378.7755437344. The cubic root of 1901022 is about 123.8784361878.

The spelling of 1901022 in words is "one million, nine hundred one thousand, twenty-two".