1888213 has 2 divisors, whose sum is σ = 1888214. Its totient is φ = 1888212.

The previous prime is 1888199. The next prime is 1888217. The reversal of 1888213 is 3128881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1790244 + 97969 = 1338^2 + 313^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1888213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1888217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944106 + 944107.

It is an arithmetic number, because the mean of its divisors is an integer number (944107).

2^1888213 is an apocalyptic number.

It is an amenable number.

1888213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1888213 is an equidigital number, since it uses as much as digits as its factorization.

1888213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 31.

The square root of 1888213 is about 1374.1226291711. The cubic root of 1888213 is about 123.5995798452.

The spelling of 1888213 in words is "one million, eight hundred eighty-eight thousand, two hundred thirteen".