1854157 has 2 divisors, whose sum is σ = 1854158. Its totient is φ = 1854156.

The previous prime is 1854131. The next prime is 1854163. The reversal of 1854157 is 7514581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1406596 + 447561 = 1186^2 + 669^2 .

It is an emirp because it is prime and its reverse (7514581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1854157 - 2⁷ = 1854029 is a prime.

It is a Chen prime.

It is equal to p₁₃₈₈₂₉ and since 1854157 and 138829 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1854187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927078 + 927079.

It is an arithmetic number, because the mean of its divisors is an integer number (927079).

2^1854157 is an apocalyptic number.

It is an amenable number.

1854157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1854157 is an equidigital number, since it uses as much as digits as its factorization.

1854157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 31.

The square root of 1854157 is about 1361.6743369837. The cubic root of 1854157 is about 122.8519822577.

The spelling of 1854157 in words is "one million, eight hundred fifty-four thousand, one hundred fifty-seven".