365216749 has 4 divisors (see below), whose sum is σ = 377810460. Its totient is φ = 352623040.

The previous prime is 365216711. The next prime is 365216767. The reversal of 365216749 is 947612563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947612563 = 379 ⋅2500297.

It can be written as a sum of positive squares in 2 ways, for example, as 188512900 + 176703849 = 13730^2 + 13293^2 .

It is a cyclic number.

It is not a de Polignac number, because 365216749 - 2¹¹ = 365214701 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (365216249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6296812 + ... + 6296869.

It is an arithmetic number, because the mean of its divisors is an integer number (94452615).

Almost surely, 2^365216749 is an apocalyptic number.

It is an amenable number.

365216749 is a deficient number, since it is larger than the sum of its proper divisors (12593711).

365216749 is a wasteful number, since it uses less digits than its factorization.

365216749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12593710.

The product of its digits is 272160, while the sum is 43.

The square root of 365216749 is about 19110.6449132414. The cubic root of 365216749 is about 714.7983841532.

The spelling of 365216749 in words is "three hundred sixty-five million, two hundred sixteen thousand, seven hundred forty-nine".