201870490 has 12 divisors (see below), whose sum is σ = 363447774. Its totient is φ = 80730224.

The previous prime is 201870469. The next prime is 201870503. The reversal of 201870490 is 94078102.

201870490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 188320729 + 13549761 = 13723^2 + 3681^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42684 + ... + 47176.

Almost surely, 2^201870490 is an apocalyptic number.

201870490 is a deficient number, since it is larger than the sum of its proper divisors (161577284).

201870490 is an frugal number, since it uses more digits than its factorization.

201870490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8993 (or 4500 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 201870490 is about 14208.1135271365. The cubic root of 201870490 is about 586.6210087717.

The spelling of 201870490 in words is "two hundred one million, eight hundred seventy thousand, four hundred ninety".