1838157 has 4 divisors (see below), whose sum is σ = 2450880. Its totient is φ = 1225436.

The previous prime is 1838143. The next prime is 1838167. The reversal of 1838157 is 7518381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1838157 - 2⁴ = 1838141 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838167) 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, 306357 + ... + 306362.

It is an arithmetic number, because the mean of its divisors is an integer number (612720).

2^1838157 is an apocalyptic number.

It is an amenable number.

1838157 is a deficient number, since it is larger than the sum of its proper divisors (612723).

1838157 is an equidigital number, since it uses as much as digits as its factorization.

1838157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612722.

The product of its digits is 6720, while the sum is 33.

The square root of 1838157 is about 1355.7864876152. The cubic root of 1838157 is about 122.4975870690.

The spelling of 1838157 in words is "one million, eight hundred thirty-eight thousand, one hundred fifty-seven".