4156127987 has 16 divisors (see below), whose sum is σ = 4608852864. Its totient is φ = 3716064000.

The previous prime is 4156127981. The next prime is 4156127999. The reversal of 4156127987 is 7897216514.

It is a happy number.

It is not a de Polignac number, because 4156127987 - 2²⁸ = 3887692531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4156127981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505187 + ... + 513347.

It is an arithmetic number, because the mean of its divisors is an integer number (288053304).

Almost surely, 2^4156127987 is an apocalyptic number.

4156127987 is a deficient number, since it is larger than the sum of its proper divisors (452724877).

4156127987 is a wasteful number, since it uses less digits than its factorization.

4156127987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8930.

The product of its digits is 846720, while the sum is 50.

The square root of 4156127987 is about 64468.0384919535. The cubic root of 4156127987 is about 1607.7911644905.

The spelling of 4156127987 in words is "four billion, one hundred fifty-six million, one hundred twenty-seven thousand, nine hundred eighty-seven".