213415749 has 16 divisors (see below), whose sum is σ = 326371840. Its totient is φ = 137687040.

The previous prime is 213415747. The next prime is 213415777. The reversal of 213415749 is 947514312.

It is not a de Polignac number, because 213415749 - 2¹ = 213415747 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213415747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126652 + ... + 128325.

It is an arithmetic number, because the mean of its divisors is an integer number (20398240).

Almost surely, 2^213415749 is an apocalyptic number.

It is an amenable number.

213415749 is a deficient number, since it is larger than the sum of its proper divisors (112956091).

213415749 is a wasteful number, since it uses less digits than its factorization.

213415749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255017 (or 255011 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 213415749 is about 14608.7559018556. The cubic root of 213415749 is about 597.5975683761.

The spelling of 213415749 in words is "two hundred thirteen million, four hundred fifteen thousand, seven hundred forty-nine".