20194037 has 2 divisors, whose sum is σ = 20194038. Its totient is φ = 20194036.

The previous prime is 20193991. The next prime is 20194039. The reversal of 20194037 is 73049102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14853316 + 5340721 = 3854^2 + 2311^2 .

It is a cyclic number.

It is not a de Polignac number, because 20194037 - 2¹² = 20189941 is a prime.

Together with 20194039, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20193997 and 20194015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20194039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10097018 + 10097019.

It is an arithmetic number, because the mean of its divisors is an integer number (10097019).

Almost surely, 2^20194037 is an apocalyptic number.

It is an amenable number.

20194037 is a deficient number, since it is larger than the sum of its proper divisors (1).

20194037 is an equidigital number, since it uses as much as digits as its factorization.

20194037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 20194037 is about 4493.7775868416. Note that the first 3 decimals coincide. The cubic root of 20194037 is about 272.3167670922.

It can be divided in two parts, 2019 and 4037, that multiplied together give a triangular number (8150703 = T₄₀₃₇).

The spelling of 20194037 in words is "twenty million, one hundred ninety-four thousand, thirty-seven".