18949046029 has 4 divisors (see below), whose sum is σ = 19208622076. Its totient is φ = 18689469984.

The previous prime is 18949045993. The next prime is 18949046033. The reversal of 18949046029 is 92064094981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9221760900 + 9727285129 = 96030^2 + 98627^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18949046029 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 (18949046059) 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, 129787914 + ... + 129788059.

It is an arithmetic number, because the mean of its divisors is an integer number (4802155519).

Almost surely, 2^18949046029 is an apocalyptic number.

It is an amenable number.

18949046029 is a deficient number, since it is larger than the sum of its proper divisors (259576047).

18949046029 is an equidigital number, since it uses as much as digits as its factorization.

18949046029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259576046.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 18949046029 in words is "eighteen billion, nine hundred forty-nine million, forty-six thousand, twenty-nine".