159780847 has 2 divisors, whose sum is σ = 159780848. Its totient is φ = 159780846.

The previous prime is 159780833. The next prime is 159780869. The reversal of 159780847 is 748087951.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 159780847 - 2¹⁵ = 159748079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159780847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159780877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79890423 + 79890424.

It is an arithmetic number, because the mean of its divisors is an integer number (79890424).

Almost surely, 2^159780847 is an apocalyptic number.

159780847 is a deficient number, since it is larger than the sum of its proper divisors (1).

159780847 is an equidigital number, since it uses as much as digits as its factorization.

159780847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 49.

The square root of 159780847 is about 12640.4448893225. Note that the first 3 decimals coincide. The cubic root of 159780847 is about 542.6355464144.

The spelling of 159780847 in words is "one hundred fifty-nine million, seven hundred eighty thousand, eight hundred forty-seven".