1553108868 has 36 divisors (see below), whose sum is σ = 4132542960. Its totient is φ = 490455216.

The previous prime is 1553108867. The next prime is 1553108903. The reversal of 1553108868 is 8688013551.

1553108868 is a `hidden beast` number, since 1 + 553 + 10 + 8 + 86 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1553108863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1134630 + ... + 1135997.

It is an arithmetic number, because the mean of its divisors is an integer number (114792860).

Almost surely, 2^1553108868 is an apocalyptic number.

1553108868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1553108868 is an abundant number, since it is smaller than the sum of its proper divisors (2579434092).

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

1553108868 is a wasteful number, since it uses less digits than its factorization.

1553108868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270656 (or 2270651 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 1553108868 is about 39409.5022551668. The cubic root of 1553108868 is about 1158.0677472960.

The spelling of 1553108868 in words is "one billion, five hundred fifty-three million, one hundred eight thousand, eight hundred sixty-eight".