8638578141 has 16 divisors (see below), whose sum is σ = 11898839040. Its totient is φ = 5568971760.

The previous prime is 8638578121. The next prime is 8638578197. The reversal of 8638578141 is 1418758368.

It is a happy number.

It is not a de Polignac number, because 8638578141 - 2⁶ = 8638578077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8638578121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87456 + ... + 157878.

It is an arithmetic number, because the mean of its divisors is an integer number (743677440).

Almost surely, 2^8638578141 is an apocalyptic number.

It is an amenable number.

8638578141 is a deficient number, since it is larger than the sum of its proper divisors (3260260899).

8638578141 is a wasteful number, since it uses less digits than its factorization.

8638578141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71776.

The product of its digits is 1290240, while the sum is 51.

The square root of 8638578141 is about 92943.9516106347. The cubic root of 8638578141 is about 2051.8585675826.

The spelling of 8638578141 in words is "eight billion, six hundred thirty-eight million, five hundred seventy-eight thousand, one hundred forty-one".