18906734 has 24 divisors (see below), whose sum is σ = 35629104. Its totient is φ = 7365600.

The previous prime is 18906733. The next prime is 18906751. The reversal of 18906734 is 43760981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18906733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3887 + ... + 7274.

It is an arithmetic number, because the mean of its divisors is an integer number (1484546).

Almost surely, 2^18906734 is an apocalyptic number.

18906734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18906734 is a deficient number, since it is larger than the sum of its proper divisors (16722370).

18906734 is a wasteful number, since it uses less digits than its factorization.

18906734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192 (or 11181 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 18906734 is about 4348.1874384621. The cubic root of 18906734 is about 266.4028324570.

The spelling of 18906734 in words is "eighteen million, nine hundred six thousand, seven hundred thirty-four".