18434077 has 4 divisors (see below), whose sum is σ = 18452700. Its totient is φ = 18415456.

The previous prime is 18434027. The next prime is 18434081. The reversal of 18434077 is 77043481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77043481 = 47 ⋅1639223.

It can be written as a sum of positive squares in 2 ways, for example, as 15007876 + 3426201 = 3874^2 + 1851^2 .

It is a cyclic number.

It is not a de Polignac number, because 18434077 - 2⁷ = 18433949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18434027) 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, 7738 + ... + 9835.

It is an arithmetic number, because the mean of its divisors is an integer number (4613175).

Almost surely, 2^18434077 is an apocalyptic number.

It is an amenable number.

18434077 is a deficient number, since it is larger than the sum of its proper divisors (18623).

18434077 is a wasteful number, since it uses less digits than its factorization.

18434077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18622.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 18434077 is about 4293.4924012976. The cubic root of 18434077 is about 264.1641015628.

The spelling of 18434077 in words is "eighteen million, four hundred thirty-four thousand, seventy-seven".