2194931 has 2 divisors, whose sum is σ = 2194932. Its totient is φ = 2194930.

The previous prime is 2194903. The next prime is 2194939. The reversal of 2194931 is 1394912.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2194931 is a prime.

It is a super-2 number, since 2×2194931² = 9635444189522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2194894 and 2194903.

It is not a weakly prime, because it can be changed into another prime (2194939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097465 + 1097466.

It is an arithmetic number, because the mean of its divisors is an integer number (1097466).

2^2194931 is an apocalyptic number.

2194931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194931 is an equidigital number, since it uses as much as digits as its factorization.

2194931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 29.

The square root of 2194931 is about 1481.5299524478. The cubic root of 2194931 is about 129.9591785044.

It can be divided in two parts, 2194 and 931, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2194931 in words is "two million, one hundred ninety-four thousand, nine hundred thirty-one".