18941768 has 8 divisors (see below), whose sum is σ = 35515830. Its totient is φ = 9470880.

The previous prime is 18941761. The next prime is 18941777. The reversal of 18941768 is 86714981.

It can be written as a sum of positive squares in only one way, i.e., 18852964 + 88804 = 4342^2 + 298^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18941761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1183853 + ... + 1183868.

Almost surely, 2^18941768 is an apocalyptic number.

It is an amenable number.

18941768 is a deficient number, since it is larger than the sum of its proper divisors (16574062).

18941768 is a wasteful number, since it uses less digits than its factorization.

18941768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367727 (or 2367723 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 18941768 is about 4352.2141491429. The cubic root of 18941768 is about 266.5672782397.

The spelling of 18941768 in words is "eighteen million, nine hundred forty-one thousand, seven hundred sixty-eight".