157838 has 4 divisors (see below), whose sum is σ = 236760. Its totient is φ = 78918.

The previous prime is 157837. The next prime is 157841. The reversal of 157838 is 838751.

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

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39458 + ... + 39461.

It is an arithmetic number, because the mean of its divisors is an integer number (59190).

2¹⁵⁷⁸³⁸ is an apocalyptic number.

157838 is a deficient number, since it is larger than the sum of its proper divisors (78922).

157838 is an equidigital number, since it uses as much as digits as its factorization.

157838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78921.

The product of its digits is 6720, while the sum is 32.

The square root of 157838 is about 397.2883084109. The cubic root of 157838 is about 54.0427188259.

The spelling of 157838 in words is "one hundred fifty-seven thousand, eight hundred thirty-eight".