202102018 has 16 divisors (see below), whose sum is σ = 323038584. Its totient is φ = 94498560.

The previous prime is 202102003. The next prime is 202102039. The reversal of 202102018 is 810201202.

It can be written as a sum of positive squares in 4 ways, for example, as 201838849 + 263169 = 14207^2 + 513^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202101992 and 202102010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13593 + ... + 24268.

Almost surely, 2^202102018 is an apocalyptic number.

202102018 is a deficient number, since it is larger than the sum of its proper divisors (120936566).

202102018 is a wasteful number, since it uses less digits than its factorization.

202102018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38037.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 202102018 is about 14216.2589312379. The cubic root of 202102018 is about 586.8451909486.

The spelling of 202102018 in words is "two hundred two million, one hundred two thousand, eighteen".