38645007 has 4 divisors (see below), whose sum is σ = 51526680. Its totient is φ = 25763336.

The previous prime is 38644939. The next prime is 38645011. The reversal of 38645007 is 70054683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70054683 = 3 ⋅23351561.

It is a cyclic number.

It is not a de Polignac number, because 38645007 - 2²⁰ = 37596431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38645017) 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, 6440832 + ... + 6440837.

It is an arithmetic number, because the mean of its divisors is an integer number (12881670).

Almost surely, 2^38645007 is an apocalyptic number.

38645007 is a deficient number, since it is larger than the sum of its proper divisors (12881673).

38645007 is a wasteful number, since it uses less digits than its factorization.

38645007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12881672.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 38645007 is about 6216.5108380827. The cubic root of 38645007 is about 338.0890694620.

The spelling of 38645007 in words is "thirty-eight million, six hundred forty-five thousand, seven".