18969071 has 8 divisors (see below), whose sum is σ = 21084624. Its totient is φ = 16918720.

The previous prime is 18969047. The next prime is 18969077. The reversal of 18969071 is 17096981.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18969071 - 2⁶ = 18969007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18969077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15686 + ... + 16851.

It is an arithmetic number, because the mean of its divisors is an integer number (2635578).

Almost surely, 2^18969071 is an apocalyptic number.

18969071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18969071 is a deficient number, since it is larger than the sum of its proper divisors (2115553).

18969071 is a wasteful number, since it uses less digits than its factorization.

18969071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32601.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 18969071 is about 4355.3496989335. The cubic root of 18969071 is about 266.6952950167.

The spelling of 18969071 in words is "eighteen million, nine hundred sixty-nine thousand, seventy-one".