18512029834 has 8 divisors (see below), whose sum is σ = 27769546368. Its totient is φ = 9255514380.

The previous prime is 18512029831. The next prime is 18512029841. The reversal of 18512029834 is 43892021581.

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

It is not an unprimeable number, because it can be changed into a prime (18512029831) 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, 202192 + ... + 279115.

It is an arithmetic number, because the mean of its divisors is an integer number (3471193296).

Almost surely, 2^18512029834 is an apocalyptic number.

18512029834 is a deficient number, since it is larger than the sum of its proper divisors (9257516534).

18512029834 is a wasteful number, since it uses less digits than its factorization.

18512029834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500540.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 18512029834 in words is "eighteen billion, five hundred twelve million, twenty-nine thousand, eight hundred thirty-four".