18934057 has 2 divisors, whose sum is σ = 18934058. Its totient is φ = 18934056.

The previous prime is 18934033. The next prime is 18934081. The reversal of 18934057 is 75043981.

It is a balanced prime because it is at equal distance from previous prime (18934033) and next prime (18934081).

It can be written as a sum of positive squares in only one way, i.e., 12257001 + 6677056 = 3501^2 + 2584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18934057 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18934007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9467028 + 9467029.

It is an arithmetic number, because the mean of its divisors is an integer number (9467029).

Almost surely, 2^18934057 is an apocalyptic number.

It is an amenable number.

18934057 is a deficient number, since it is larger than the sum of its proper divisors (1).

18934057 is an equidigital number, since it uses as much as digits as its factorization.

18934057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 18934057 is about 4351.3281880364. The cubic root of 18934057 is about 266.5311010593.

The spelling of 18934057 in words is "eighteen million, nine hundred thirty-four thousand, fifty-seven".