2100194 has 16 divisors (see below), whose sum is σ = 3279096. Its totient is φ = 1008000.

The previous prime is 2100193. The next prime is 2100221. The reversal of 2100194 is 4910012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2002225 + 97969 = 1415^2 + 313^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2100191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7334 + ... + 7614.

2^2100194 is an apocalyptic number.

2100194 is a deficient number, since it is larger than the sum of its proper divisors (1178902).

2100194 is a wasteful number, since it uses less digits than its factorization.

2100194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2100194 is about 1449.2046094324. The cubic root of 2100194 is about 128.0618597481.

The spelling of 2100194 in words is "two million, one hundred thousand, one hundred ninety-four".