18742527 has 6 divisors (see below), whose sum is σ = 27072552. Its totient is φ = 12495012.

The previous prime is 18742523. The next prime is 18742541. The reversal of 18742527 is 72524781.

It is not a de Polignac number, because 18742527 - 2² = 18742523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18742491 and 18742500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18742523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1041243 + ... + 1041260.

It is an arithmetic number, because the mean of its divisors is an integer number (4512092).

Almost surely, 2^18742527 is an apocalyptic number.

18742527 is a deficient number, since it is larger than the sum of its proper divisors (8330025).

18742527 is a wasteful number, since it uses less digits than its factorization.

18742527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082509 (or 2082506 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 18742527 is about 4329.2640252126. The cubic root of 18742527 is about 265.6293431724.

The spelling of 18742527 in words is "eighteen million, seven hundred forty-two thousand, five hundred twenty-seven".