38111645 has 32 divisors (see below), whose sum is σ = 54238464. Its totient is φ = 25344000.

The previous prime is 38111639. The next prime is 38111659. The reversal of 38111645 is 54611183.

It is not a de Polignac number, because 38111645 - 2⁴ = 38111629 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107789 + ... + 108141.

It is an arithmetic number, because the mean of its divisors is an integer number (1694952).

Almost surely, 2^38111645 is an apocalyptic number.

It is an amenable number.

38111645 is a deficient number, since it is larger than the sum of its proper divisors (16126819).

38111645 is a wasteful number, since it uses less digits than its factorization.

38111645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533.

The product of its digits is 2880, while the sum is 29.

The square root of 38111645 is about 6173.4629666015. The cubic root of 38111645 is about 336.5264711617.

The spelling of 38111645 in words is "thirty-eight million, one hundred eleven thousand, six hundred forty-five".