213846957 has 36 divisors (see below), whose sum is σ = 336972480. Its totient is φ = 130316256.

The previous prime is 213846953. The next prime is 213846973. The reversal of 213846957 is 759648312.

213846957 is a `hidden beast` number, since 2 + 138 + 469 + 57 = 666.

It is not a de Polignac number, because 213846957 - 2² = 213846953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213846953) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 143068 + ... + 144554.

Almost surely, 2^213846957 is an apocalyptic number.

It is an amenable number.

213846957 is a deficient number, since it is larger than the sum of its proper divisors (123125523).

213846957 is a wasteful number, since it uses less digits than its factorization.

213846957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570 (or 1538 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 213846957 is about 14623.5070007163. The cubic root of 213846957 is about 597.9997809494. Note that the first 3 decimals are identical.

The spelling of 213846957 in words is "two hundred thirteen million, eight hundred forty-six thousand, nine hundred fifty-seven".