218953001 has 2 divisors, whose sum is σ = 218953002. Its totient is φ = 218953000.

The previous prime is 218952961. The next prime is 218953037. The reversal of 218953001 is 100359812.

218953001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125328025 + 93624976 = 11195^2 + 9676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218953001 is a prime.

It is not a weakly prime, because it can be changed into another prime (218953051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109476500 + 109476501.

It is an arithmetic number, because the mean of its divisors is an integer number (109476501).

Almost surely, 2^218953001 is an apocalyptic number.

It is an amenable number.

218953001 is a deficient number, since it is larger than the sum of its proper divisors (1).

218953001 is an equidigital number, since it uses as much as digits as its factorization.

218953001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 218953001 is about 14797.0605526909. The cubic root of 218953001 is about 602.7218936713.

The spelling of 218953001 in words is "two hundred eighteen million, nine hundred fifty-three thousand, one".