18434769 has 16 divisors (see below), whose sum is σ = 26575680. Its totient is φ = 11327040.

The previous prime is 18434723. The next prime is 18434791. The reversal of 18434769 is 96743481.

It is not a de Polignac number, because 18434769 - 2⁷ = 18434641 is a prime.

It is a super-2 number, since 2×18434769² = 679681416166722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18434769.

It is not an unprimeable number, because it can be changed into a prime (18034769) 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 in 15 ways as a sum of consecutive naturals, for example, 2262 + ... + 6479.

It is an arithmetic number, because the mean of its divisors is an integer number (1660980).

Almost surely, 2^18434769 is an apocalyptic number.

18434769 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

18434769 is a deficient number, since it is larger than the sum of its proper divisors (8140911).

18434769 is a wasteful number, since it uses less digits than its factorization.

18434769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8800.

The product of its digits is 145152, while the sum is 42.

The square root of 18434769 is about 4293.5729876177. The cubic root of 18434769 is about 264.1674070220.

The spelling of 18434769 in words is "eighteen million, four hundred thirty-four thousand, seven hundred sixty-nine".