159494621 has 16 divisors (see below), whose sum is σ = 188381760. Its totient is φ = 133125120.

The previous prime is 159494617. The next prime is 159494623. The reversal of 159494621 is 126494951.

159494621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 159494621 - 2² = 159494617 is a prime.

It is a super-3 number, since 3×159494621³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159494623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24710 + ... + 30488.

It is an arithmetic number, because the mean of its divisors is an integer number (11773860).

Almost surely, 2^159494621 is an apocalyptic number.

159494621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

159494621 is a deficient number, since it is larger than the sum of its proper divisors (28887139).

159494621 is a wasteful number, since it uses less digits than its factorization.

159494621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5996.

The product of its digits is 77760, while the sum is 41.

The square root of 159494621 is about 12629.1179818703. The cubic root of 159494621 is about 542.3113330932.

The spelling of 159494621 in words is "one hundred fifty-nine million, four hundred ninety-four thousand, six hundred twenty-one".