18070477 has 2 divisors, whose sum is σ = 18070478. Its totient is φ = 18070476.

The previous prime is 18070411. The next prime is 18070483. The reversal of 18070477 is 77407081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15570916 + 2499561 = 3946^2 + 1581^2 .

It is a cyclic number.

It is not a de Polignac number, because 18070477 - 2¹⁵ = 18037709 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18070177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9035238 + 9035239.

It is an arithmetic number, because the mean of its divisors is an integer number (9035239).

Almost surely, 2^18070477 is an apocalyptic number.

It is an amenable number.

18070477 is a deficient number, since it is larger than the sum of its proper divisors (1).

18070477 is an equidigital number, since it uses as much as digits as its factorization.

18070477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10976, while the sum is 34.

The square root of 18070477 is about 4250.9383669962. The cubic root of 18070477 is about 262.4157347064.

The spelling of 18070477 in words is "eighteen million, seventy thousand, four hundred seventy-seven".