38918253 has 32 divisors (see below), whose sum is σ = 60435072. Its totient is φ = 22016000.

The previous prime is 38918233. The next prime is 38918263. The reversal of 38918253 is 35281983.

38918253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

38918253 is a nontrivial binomial coefficient, being equal to C(8823, 2).

It is a cyclic number.

It is not a de Polignac number, because 38918253 - 2⁵ = 38918221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38918233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96853 + ... + 97253.

It is an arithmetic number, because the mean of its divisors is an integer number (1888596).

Almost surely, 2^38918253 is an apocalyptic number.

38918253 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

38918253 is the 8822-nd triangular number.

It is an amenable number.

38918253 is a deficient number, since it is larger than the sum of its proper divisors (21516819).

38918253 is a wasteful number, since it uses less digits than its factorization.

38918253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605.

The product of its digits is 51840, while the sum is 39.

The square root of 38918253 is about 6238.4495669998. The cubic root of 38918253 is about 338.8840372244.

The spelling of 38918253 in words is "thirty-eight million, nine hundred eighteen thousand, two hundred fifty-three".