158743987 has 2 divisors, whose sum is σ = 158743988. Its totient is φ = 158743986.

The previous prime is 158743969. The next prime is 158744009. The reversal of 158743987 is 789347851.

It is a weak prime.

It is an emirp because it is prime and its reverse (789347851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158743987 - 2¹⁵ = 158711219 is a prime.

It is not a weakly prime, because it can be changed into another prime (158743927) 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 as a sum of consecutive naturals, namely, 79371993 + 79371994.

It is an arithmetic number, because the mean of its divisors is an integer number (79371994).

Almost surely, 2^158743987 is an apocalyptic number.

158743987 is a deficient number, since it is larger than the sum of its proper divisors (1).

158743987 is an equidigital number, since it uses as much as digits as its factorization.

158743987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 52.

The square root of 158743987 is about 12599.3645474683. The cubic root of 158743987 is about 541.4592299298.

The spelling of 158743987 in words is "one hundred fifty-eight million, seven hundred forty-three thousand, nine hundred eighty-seven".