1900201 has 2 divisors, whose sum is σ = 1900202. Its totient is φ = 1900200.

The previous prime is 1900189. The next prime is 1900219. The reversal of 1900201 is 1020091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1625625 + 274576 = 1275^2 + 524^2 .

It is a cyclic number.

It is not a de Polignac number, because 1900201 - 2⁵ = 1900169 is a prime.

It is a super-2 number, since 2×1900201² = 7221527680802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1900231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950100 + 950101.

It is an arithmetic number, because the mean of its divisors is an integer number (950101).

2^1900201 is an apocalyptic number.

It is an amenable number.

1900201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1900201 is an equidigital number, since it uses as much as digits as its factorization.

1900201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1900201 is about 1378.4777836440. The cubic root of 1900201 is about 123.8606003709.

Adding to 1900201 its reverse (1020091), we get a palindrome (2920292).

The spelling of 1900201 in words is "one million, nine hundred thousand, two hundred one".