213189849 has 12 divisors (see below), whose sum is σ = 308324016. Its totient is φ = 141949752.

The previous prime is 213189841. The next prime is 213189853. The reversal of 213189849 is 948981312.

It is not a de Polignac number, because 213189849 - 2³ = 213189841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213189841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6879 + ... + 21764.

It is an arithmetic number, because the mean of its divisors is an integer number (25693668).

Almost surely, 2^213189849 is an apocalyptic number.

It is an amenable number.

213189849 is a deficient number, since it is larger than the sum of its proper divisors (95134167).

213189849 is a wasteful number, since it uses less digits than its factorization.

213189849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29476 (or 29473 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 213189849 is about 14601.0221902441. The cubic root of 213189849 is about 597.3866421272.

The spelling of 213189849 in words is "two hundred thirteen million, one hundred eighty-nine thousand, eight hundred forty-nine".