816282749 has 8 divisors (see below), whose sum is σ = 845350560. Its totient is φ = 787276336.

The previous prime is 816282743. The next prime is 816282763. The reversal of 816282749 is 947282618.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-816282749 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 (816282743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12602 + ... + 42324.

It is an arithmetic number, because the mean of its divisors is an integer number (105668820).

Almost surely, 2^816282749 is an apocalyptic number.

It is an amenable number.

816282749 is a deficient number, since it is larger than the sum of its proper divisors (29067811).

816282749 is a wasteful number, since it uses less digits than its factorization.

816282749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30699.

The product of its digits is 387072, while the sum is 47.

The square root of 816282749 is about 28570.6623829410. The cubic root of 816282749 is about 934.5736659093.

The spelling of 816282749 in words is "eight hundred sixteen million, two hundred eighty-two thousand, seven hundred forty-nine".