157839853 has 4 divisors (see below), whose sum is σ = 158529340. Its totient is φ = 157150368.

The previous prime is 157839827. The next prime is 157839881. The reversal of 157839853 is 358938751.

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 144312169 + 13527684 = 12013^2 + 3678^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157839853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157839797 and 157839806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157839893) 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, 344400 + ... + 344857.

It is an arithmetic number, because the mean of its divisors is an integer number (39632335).

Almost surely, 2^157839853 is an apocalyptic number.

It is an amenable number.

157839853 is a deficient number, since it is larger than the sum of its proper divisors (689487).

157839853 is an equidigital number, since it uses as much as digits as its factorization.

157839853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689486.

The product of its digits is 907200, while the sum is 49.

The square root of 157839853 is about 12563.4331693212. The cubic root of 157839853 is about 540.4293031013.

The spelling of 157839853 in words is "one hundred fifty-seven million, eight hundred thirty-nine thousand, eight hundred fifty-three".