38813623 has 4 divisors (see below), whose sum is σ = 38831400. Its totient is φ = 38795848.

The previous prime is 38813617. The next prime is 38813633. The reversal of 38813623 is 32631883.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38813623 is a prime.

It is a super-2 number, since 2×38813623² = 3012994660772258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38813633) 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, 5065 + ... + 10162.

It is an arithmetic number, because the mean of its divisors is an integer number (9707850).

Almost surely, 2^38813623 is an apocalyptic number.

38813623 is a deficient number, since it is larger than the sum of its proper divisors (17777).

38813623 is a wasteful number, since it uses less digits than its factorization.

38813623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17776.

The product of its digits is 20736, while the sum is 34.

The square root of 38813623 is about 6230.0580254120. The cubic root of 38813623 is about 338.5800730870.

The spelling of 38813623 in words is "thirty-eight million, eight hundred thirteen thousand, six hundred twenty-three".