18953029 has 8 divisors (see below), whose sum is σ = 19598040. Its totient is φ = 18316800.

The previous prime is 18953023. The next prime is 18953041. The reversal of 18953029 is 92035981.

It can be written as a sum of positive squares in 4 ways, for example, as 5062500 + 13890529 = 2250^2 + 3727^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18953029 - 2³ = 18953021 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 (18953021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2349 + ... + 6589.

It is an arithmetic number, because the mean of its divisors is an integer number (2449755).

Almost surely, 2^18953029 is an apocalyptic number.

It is an amenable number.

18953029 is a deficient number, since it is larger than the sum of its proper divisors (645011).

18953029 is a wasteful number, since it uses less digits than its factorization.

18953029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 18953029 is about 4353.5076662388. The cubic root of 18953029 is about 266.6200930816.

The spelling of 18953029 in words is "eighteen million, nine hundred fifty-three thousand, twenty-nine".