159749145 has 32 divisors (see below), whose sum is σ = 296352000. Its totient is φ = 81493632.

The previous prime is 159749143. The next prime is 159749159. The reversal of 159749145 is 541947951.

159749145 is a `hidden beast` number, since 1 + 597 + 49 + 14 + 5 = 666.

It is not a de Polignac number, because 159749145 - 2¹ = 159749143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 159749145.

It is not an unprimeable number, because it can be changed into a prime (159749143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22620 + ... + 28829.

It is an arithmetic number, because the mean of its divisors is an integer number (9261000).

Almost surely, 2^159749145 is an apocalyptic number.

159749145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

159749145 is a deficient number, since it is larger than the sum of its proper divisors (136602855).

159749145 is a wasteful number, since it uses less digits than its factorization.

159749145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51486 (or 51480 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 159749145 is about 12639.1908364420. The cubic root of 159749145 is about 542.5996560677.

The spelling of 159749145 in words is "one hundred fifty-nine million, seven hundred forty-nine thousand, one hundred forty-five".