38316749 has 4 divisors (see below), whose sum is σ = 40333440. Its totient is φ = 36300060.

The previous prime is 38316739. The next prime is 38316757. The reversal of 38316749 is 94761383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38316749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38316709) 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, 1008317 + ... + 1008354.

It is an arithmetic number, because the mean of its divisors is an integer number (10083360).

Almost surely, 2^38316749 is an apocalyptic number.

It is an amenable number.

38316749 is a deficient number, since it is larger than the sum of its proper divisors (2016691).

38316749 is a wasteful number, since it uses less digits than its factorization.

38316749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016690.

The product of its digits is 108864, while the sum is 41.

The square root of 38316749 is about 6190.0524230413. The cubic root of 38316749 is about 337.1290820335.

The spelling of 38316749 in words is "thirty-eight million, three hundred sixteen thousand, seven hundred forty-nine".