18956029 has 4 divisors (see below), whose sum is σ = 19046080. Its totient is φ = 18865980.

The previous prime is 18956009. The next prime is 18956057. The reversal of 18956029 is 92065981.

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.

It is a cyclic number.

It is not a de Polignac number, because 18956029 - 2¹⁹ = 18431741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18955982 and 18956000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18956009) 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, 44709 + ... + 45130.

It is an arithmetic number, because the mean of its divisors is an integer number (4761520).

Almost surely, 2^18956029 is an apocalyptic number.

It is an amenable number.

18956029 is a deficient number, since it is larger than the sum of its proper divisors (90051).

18956029 is an equidigital number, since it uses as much as digits as its factorization.

18956029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90050.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 18956029 is about 4353.8522023606. The cubic root of 18956029 is about 266.6341597528.

The spelling of 18956029 in words is "eighteen million, nine hundred fifty-six thousand, twenty-nine".