1994251 has 6 divisors (see below), whose sum is σ = 2319900. Its totient is φ = 1709316.

The previous prime is 1994227. The next prime is 1994299. The reversal of 1994251 is 1524991.

It is not a de Polignac number, because 1994251 - 2¹¹ = 1992203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1994051) 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, 20301 + ... + 20398.

It is an arithmetic number, because the mean of its divisors is an integer number (386650).

2^1994251 is an apocalyptic number.

1994251 is a deficient number, since it is larger than the sum of its proper divisors (325649).

1994251 is an equidigital number, since it uses as much as digits as its factorization.

1994251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40713 (or 40706 counting only the distinct ones).

The product of its digits is 3240, while the sum is 31.

The square root of 1994251 is about 1412.1795211658. The cubic root of 1994251 is about 125.8712676979.

The spelling of 1994251 in words is "one million, nine hundred ninety-four thousand, two hundred fifty-one".