2185489402 has 16 divisors (see below), whose sum is σ = 3470061600. Its totient is φ = 1029445200.

The previous prime is 2185489399. The next prime is 2185489457. The reversal of 2185489402 is 2049845812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153849 + ... + 167452.

It is an arithmetic number, because the mean of its divisors is an integer number (216878850).

Almost surely, 2^2185489402 is an apocalyptic number.

2185489402 is a deficient number, since it is larger than the sum of its proper divisors (1284572198).

2185489402 is a wasteful number, since it uses less digits than its factorization.

2185489402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321501.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 2185489402 is about 46749.2181966715. The cubic root of 2185489402 is about 1297.7256885687.

The spelling of 2185489402 in words is "two billion, one hundred eighty-five million, four hundred eighty-nine thousand, four hundred two".