1555468868 has 12 divisors (see below), whose sum is σ = 2722824720. Its totient is φ = 777518952.

The previous prime is 1555468867. The next prime is 1555468891. The reversal of 1555468868 is 8688645551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1555468867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37046 + ... + 66957.

It is an arithmetic number, because the mean of its divisors is an integer number (226902060).

Almost surely, 2^1555468868 is an apocalyptic number.

It is an amenable number.

1555468868 is a deficient number, since it is larger than the sum of its proper divisors (1167355852).

1555468868 is a wasteful number, since it uses less digits than its factorization.

1555468868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107746 (or 107744 counting only the distinct ones).

The product of its digits is 9216000, while the sum is 56.

The square root of 1555468868 is about 39439.4329066735. The cubic root of 1555468868 is about 1158.6540244490.

The spelling of 1555468868 in words is "one billion, five hundred fifty-five million, four hundred sixty-eight thousand, eight hundred sixty-eight".