6455990187 has 12 divisors (see below), whose sum is σ = 9327197880. Its totient is φ = 4303126368.

The previous prime is 6455990161. The next prime is 6455990207. The reversal of 6455990187 is 7810995546.

6455990187 is a `hidden beast` number, since 6 + 4 + 559 + 9 + 0 + 1 + 87 = 666.

It is not a de Polignac number, because 6455990187 - 2⁸ = 6455989931 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6455990687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23362 + ... + 116007.

It is an arithmetic number, because the mean of its divisors is an integer number (777266490).

Almost surely, 2^6455990187 is an apocalyptic number.

6455990187 is a deficient number, since it is larger than the sum of its proper divisors (2871207693).

6455990187 is a wasteful number, since it uses less digits than its factorization.

6455990187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144522 (or 144519 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The square root of 6455990187 is about 80349.1766417055. The cubic root of 6455990187 is about 1862.0340590351.

The spelling of 6455990187 in words is "six billion, four hundred fifty-five million, nine hundred ninety thousand, one hundred eighty-seven".