159451849 has 4 divisors (see below), whose sum is σ = 160914820. Its totient is φ = 157988880.

The previous prime is 159451843. The next prime is 159451909. The reversal of 159451849 is 948154951.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41512249 + 117939600 = 6443^2 + 10860^2 .

It is a cyclic number.

It is not a de Polignac number, because 159451849 - 2¹³ = 159443657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 159451799 and 159451808.

It is not an unprimeable number, because it can be changed into a prime (159451843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 731322 + ... + 731539.

It is an arithmetic number, because the mean of its divisors is an integer number (40228705).

Almost surely, 2^159451849 is an apocalyptic number.

It is an amenable number.

159451849 is a deficient number, since it is larger than the sum of its proper divisors (1462971).

159451849 is a wasteful number, since it uses less digits than its factorization.

159451849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462970.

The product of its digits is 259200, while the sum is 46.

The square root of 159451849 is about 12627.4244800751. The cubic root of 159451849 is about 542.2628511779.

The spelling of 159451849 in words is "one hundred fifty-nine million, four hundred fifty-one thousand, eight hundred forty-nine".