1901223 has 6 divisors (see below), whose sum is σ = 2746224. Its totient is φ = 1267476.

The previous prime is 1901219. The next prime is 1901231. The reversal of 1901223 is 3221091.

It is a happy number.

It is not a de Polignac number, because 1901223 - 2² = 1901219 is a prime.

It is a super-2 number, since 2×1901223² = 7229297791458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1901196 and 1901205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105615 + ... + 105632.

It is an arithmetic number, because the mean of its divisors is an integer number (457704).

2^1901223 is an apocalyptic number.

1901223 is a deficient number, since it is larger than the sum of its proper divisors (845001).

1901223 is a wasteful number, since it uses less digits than its factorization.

1901223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211253 (or 211250 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1901223 is about 1378.8484325697. The cubic root of 1901223 is about 123.8828020303.

The spelling of 1901223 in words is "one million, nine hundred one thousand, two hundred twenty-three".