18849406 has 16 divisors (see below), whose sum is σ = 29860560. Its totient is φ = 8899200.

The previous prime is 18849371. The next prime is 18849407. The reversal of 18849406 is 60494881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18849407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14620 + ... + 15856.

It is an arithmetic number, because the mean of its divisors is an integer number (1866285).

Almost surely, 2^18849406 is an apocalyptic number.

18849406 is a deficient number, since it is larger than the sum of its proper divisors (11011154).

18849406 is a wasteful number, since it uses less digits than its factorization.

18849406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 18849406 is about 4341.5902616438. The cubic root of 18849406 is about 266.1333023233.

It can be divided in two parts, 188 and 49406, that added together give a palindrome (49594).

The spelling of 18849406 in words is "eighteen million, eight hundred forty-nine thousand, four hundred six".