159747951 has 20 divisors (see below), whose sum is σ = 234359960. Its totient is φ = 96790320.

The previous prime is 159747943. The next prime is 159748003.

159747951 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 159747951 - 2³ = 159747943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159747951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159747901) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42105 + ... + 45741.

It is an arithmetic number, because the mean of its divisors is an integer number (11717998).

Almost surely, 2^159747951 is an apocalyptic number.

159747951 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

159747951 is a deficient number, since it is larger than the sum of its proper divisors (74612009).

159747951 is an frugal number, since it uses more digits than its factorization.

159747951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3684 (or 3651 counting only the distinct ones).

The product of its digits is 396900, while the sum is 48.

The square root of 159747951 is about 12639.1436023174. The cubic root of 159747951 is about 542.5983042283.

The spelling of 159747951 in words is "one hundred fifty-nine million, seven hundred forty-seven thousand, nine hundred fifty-one".