18146929 has 4 divisors (see below), whose sum is σ = 18176320. Its totient is φ = 18117540.

The previous prime is 18146927. The next prime is 18146959. The reversal of 18146929 is 92964181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92964181 = 4919 ⋅18899.

It is a cyclic number.

It is not a de Polignac number, because 18146929 - 2¹ = 18146927 is a prime.

It is a super-2 number, since 2×18146929² = 658622064262082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18146891 and 18146900.

It is not an unprimeable number, because it can be changed into a prime (18146927) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13749 + ... + 15010.

It is an arithmetic number, because the mean of its divisors is an integer number (4544080).

Almost surely, 2^18146929 is an apocalyptic number.

It is an amenable number.

18146929 is a deficient number, since it is larger than the sum of its proper divisors (29391).

18146929 is an equidigital number, since it uses as much as digits as its factorization.

18146929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29390.

The product of its digits is 31104, while the sum is 40.

The square root of 18146929 is about 4259.9212434035. The cubic root of 18146929 is about 262.7852874159.

The spelling of 18146929 in words is "eighteen million, one hundred forty-six thousand, nine hundred twenty-nine".