1618434 has 64 divisors (see below), whose sum is σ = 3991680. Its totient is φ = 483840.

The previous prime is 1618433. The next prime is 1618453. The reversal of 1618434 is 4348161.

1618434 is a `hidden beast` number, since 1 + 618 + 43 + 4 = 666.

It is a super-2 number, since 2×1618434² = 5238657224712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1618398 and 1618407.

It is not an unprimeable number, because it can be changed into a prime (1618433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37617 + ... + 37659.

It is an arithmetic number, because the mean of its divisors is an integer number (62370).

2^1618434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1618434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1995840).

1618434 is an abundant number, since it is smaller than the sum of its proper divisors (2373246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1618434 is a wasteful number, since it uses less digits than its factorization.

1618434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 106 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 1618434 is about 1272.1768744951. The cubic root of 1618434 is about 117.4081733139.

The spelling of 1618434 in words is "one million, six hundred eighteen thousand, four hundred thirty-four".