38745787 has 4 divisors (see below), whose sum is σ = 39236320. Its totient is φ = 38255256.

The previous prime is 38745781. The next prime is 38745799. The reversal of 38745787 is 78754783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78754783 = 23 ⋅3424121.

It is a cyclic number.

It is not a de Polignac number, because 38745787 - 2⁷ = 38745659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38745787.

It is not an unprimeable number, because it can be changed into a prime (38745781) 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, 245148 + ... + 245305.

It is an arithmetic number, because the mean of its divisors is an integer number (9809080).

Almost surely, 2^38745787 is an apocalyptic number.

38745787 is a deficient number, since it is larger than the sum of its proper divisors (490533).

38745787 is an equidigital number, since it uses as much as digits as its factorization.

38745787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490532.

The product of its digits is 1317120, while the sum is 49.

The square root of 38745787 is about 6224.6113934928. The cubic root of 38745787 is about 338.3827084360.

The spelling of 38745787 in words is "thirty-eight million, seven hundred forty-five thousand, seven hundred eighty-seven".