1838434 has 8 divisors (see below), whose sum is σ = 2969820. Its totient is φ = 848496.

The previous prime is 1838429. The next prime is 1838453. The reversal of 1838434 is 4348381.

It can be written as a sum of positive squares in 2 ways, for example, as 1814409 + 24025 = 1347^2 + 155^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1838396 and 1838405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35329 + ... + 35380.

2^1838434 is an apocalyptic number.

1838434 is a deficient number, since it is larger than the sum of its proper divisors (1131386).

1838434 is a wasteful number, since it uses less digits than its factorization.

1838434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70724.

The product of its digits is 9216, while the sum is 31.

The square root of 1838434 is about 1355.8886384951. Note that the first 3 decimals coincide. The cubic root of 1838434 is about 122.5037399941.

Subtracting from 1838434 its sum of digits (31), we obtain a triangular number (1838403 = T₁₉₁₇).

The spelling of 1838434 in words is "one million, eight hundred thirty-eight thousand, four hundred thirty-four".