18800473 has 2 divisors, whose sum is σ = 18800474. Its totient is φ = 18800472.

The previous prime is 18800459. The next prime is 18800479. The reversal of 18800473 is 37400881.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17539344 + 1261129 = 4188^2 + 1123^2 .

It is a cyclic number.

It is not a de Polignac number, because 18800473 - 2⁹ = 18799961 is a prime.

It is not a weakly prime, because it can be changed into another prime (18800479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9400236 + 9400237.

It is an arithmetic number, because the mean of its divisors is an integer number (9400237).

Almost surely, 2^18800473 is an apocalyptic number.

It is an amenable number.

18800473 is a deficient number, since it is larger than the sum of its proper divisors (1).

18800473 is an equidigital number, since it uses as much as digits as its factorization.

18800473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 18800473 is about 4335.9512220504. The cubic root of 18800473 is about 265.9028090100.

The spelling of 18800473 in words is "eighteen million, eight hundred thousand, four hundred seventy-three".