1814139 has 18 divisors (see below), whose sum is σ = 2785380. Its totient is φ = 1134648.

The previous prime is 1814129. The next prime is 1814143. The reversal of 1814139 is 9314181.

It is not a de Polignac number, because 1814139 - 2⁵ = 1814107 is a prime.

It is a super-2 number, since 2×1814139² = 6582200622642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1814119) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17562 + ... + 17664.

2^1814139 is an apocalyptic number.

1814139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1814139 is a deficient number, since it is larger than the sum of its proper divisors (971241).

1814139 is a wasteful number, since it uses less digits than its factorization.

1814139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 125 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 1814139 is about 1346.8997735541. The cubic root of 1814139 is about 121.9617142250.

It can be divided in two parts, 1814 and 139, that added together give a triangular number (1953 = T₆₂).

The spelling of 1814139 in words is "one million, eight hundred fourteen thousand, one hundred thirty-nine".