2154000808 has 8 divisors (see below), whose sum is σ = 4038751530. Its totient is φ = 1077000400.

The previous prime is 2154000803. The next prime is 2154000857. The reversal of 2154000808 is 8080004512.

It can be written as a sum of positive squares in only one way, i.e., 1782359524 + 371641284 = 42218^2 + 19278^2 .

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

It is a super-4 number, since 4×2154000808⁴ (a number of 38 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2154000803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134625043 + ... + 134625058.

Almost surely, 2^2154000808 is an apocalyptic number.

It is an amenable number.

2154000808 is a deficient number, since it is larger than the sum of its proper divisors (1884750722).

2154000808 is a wasteful number, since it uses less digits than its factorization.

2154000808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269250107 (or 269250103 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 2154000808 is about 46411.2142482827. The cubic root of 2154000808 is about 1291.4629573791.

The spelling of 2154000808 in words is "two billion, one hundred fifty-four million, eight hundred eight", and thus it is an aban number.