1866060468 has 18 divisors (see below), whose sum is σ = 4716986274. Its totient is φ = 622020144.

The previous prime is 1866060467. The next prime is 1866060473. The reversal of 1866060468 is 8640606681.

1866060468 is a `hidden beast` number, since 186 + 6 + 0 + 6 + 0 + 468 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1187353764 + 678706704 = 34458^2 + 26052^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866060461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25917471 + ... + 25917542.

It is an arithmetic number, because the mean of its divisors is an integer number (262054793).

Almost surely, 2^1866060468 is an apocalyptic number.

1866060468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1866060468 is an abundant number, since it is smaller than the sum of its proper divisors (2850925806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1866060468 is a wasteful number, since it uses less digits than its factorization.

1866060468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51835023 (or 51835018 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 1866060468 is about 43197.9220333571. The cubic root of 1866060468 is about 1231.1432004798.

The spelling of 1866060468 in words is "one billion, eight hundred sixty-six million, sixty thousand, four hundred sixty-eight".