8164141987 has 2 divisors, whose sum is σ = 8164141988. Its totient is φ = 8164141986.

The previous prime is 8164141969. The next prime is 8164142023. The reversal of 8164141987 is 7891414618.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8164141987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8164141987.

It is not a weakly prime, because it can be changed into another prime (8164141967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4082070993 + 4082070994.

It is an arithmetic number, because the mean of its divisors is an integer number (4082070994).

Almost surely, 2^8164141987 is an apocalyptic number.

8164141987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8164141987 is an equidigital number, since it uses as much as digits as its factorization.

8164141987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 49.

The square root of 8164141987 is about 90355.6416998961. The cubic root of 8164141987 is about 2013.5860002407.

The spelling of 8164141987 in words is "eight billion, one hundred sixty-four million, one hundred forty-one thousand, nine hundred eighty-seven".