838161253 has 4 divisors (see below), whose sum is σ = 849642988. Its totient is φ = 826679520.

The previous prime is 838161227. The next prime is 838161271. The reversal of 838161253 is 352161838.

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

It can be written as a sum of positive squares in 2 ways, for example, as 210308004 + 627853249 = 14502^2 + 25057^2 .

It is a cyclic number.

It is not a de Polignac number, because 838161253 - 2⁵ = 838161221 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 (838161053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5740758 + ... + 5740903.

It is an arithmetic number, because the mean of its divisors is an integer number (212410747).

Almost surely, 2^838161253 is an apocalyptic number.

It is an amenable number.

838161253 is a deficient number, since it is larger than the sum of its proper divisors (11481735).

838161253 is a wasteful number, since it uses less digits than its factorization.

838161253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11481734.

The product of its digits is 34560, while the sum is 37.

The square root of 838161253 is about 28951.0147145139. The cubic root of 838161253 is about 942.8498291651.

The spelling of 838161253 in words is "eight hundred thirty-eight million, one hundred sixty-one thousand, two hundred fifty-three".