8166641487 has 8 divisors (see below), whose sum is σ = 11362283904. Its totient is φ = 5207713368.

The previous prime is 8166641479. The next prime is 8166641491. The reversal of 8166641487 is 7841466618.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8166641487 - 2³ = 8166641479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8166641467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59178493 + ... + 59178630.

It is an arithmetic number, because the mean of its divisors is an integer number (1420285488).

Almost surely, 2^8166641487 is an apocalyptic number.

8166641487 is a deficient number, since it is larger than the sum of its proper divisors (3195642417).

8166641487 is a wasteful number, since it uses less digits than its factorization.

8166641487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118357149.

The product of its digits is 1548288, while the sum is 51.

The square root of 8166641487 is about 90369.4720964995. The cubic root of 8166641487 is about 2013.7914696654.

The spelling of 8166641487 in words is "eight billion, one hundred sixty-six million, six hundred forty-one thousand, four hundred eighty-seven".