18770849 has 2 divisors, whose sum is σ = 18770850. Its totient is φ = 18770848.

The previous prime is 18770837. The next prime is 18770861. The reversal of 18770849 is 94807781.

It is a balanced prime because it is at equal distance from previous prime (18770837) and next prime (18770861).

It can be written as a sum of positive squares in only one way, i.e., 18215824 + 555025 = 4268^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 18770849 - 2¹² = 18766753 is a prime.

It is not a weakly prime, because it can be changed into another prime (18770149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9385424 + 9385425.

It is an arithmetic number, because the mean of its divisors is an integer number (9385425).

Almost surely, 2^18770849 is an apocalyptic number.

It is an amenable number.

18770849 is a deficient number, since it is larger than the sum of its proper divisors (1).

18770849 is an equidigital number, since it uses as much as digits as its factorization.

18770849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 18770849 is about 4332.5337852116. The cubic root of 18770849 is about 265.7630741255.

The spelling of 18770849 in words is "eighteen million, seven hundred seventy thousand, eight hundred forty-nine".