838155253 has 8 divisors (see below), whose sum is σ = 903047096. Its totient is φ = 773323200.

The previous prime is 838155229. The next prime is 838155257. The reversal of 838155253 is 352551838.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41899729 + 796255524 = 6473^2 + 28218^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 838155253 - 2²⁹ = 301284341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838155257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16663 + ... + 44203.

It is an arithmetic number, because the mean of its divisors is an integer number (112880887).

Almost surely, 2^838155253 is an apocalyptic number.

It is an amenable number.

838155253 is a deficient number, since it is larger than the sum of its proper divisors (64891843).

838155253 is a wasteful number, since it uses less digits than its factorization.

838155253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29895.

The product of its digits is 144000, while the sum is 40.

The square root of 838155253 is about 28950.9110910175. The cubic root of 838155253 is about 942.8475793544.

The spelling of 838155253 in words is "eight hundred thirty-eight million, one hundred fifty-five thousand, two hundred fifty-three".