609541881 has 8 divisors (see below), whose sum is σ = 875239680. Its totient is φ = 375102672.

The previous prime is 609541873. The next prime is 609541909. The reversal of 609541881 is 188145906.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609541881 - 2³ = 609541873 is a prime.

It is a super-2 number, since 2×609541881² = 743082609386036322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (609541841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7814601 + ... + 7814678.

It is an arithmetic number, because the mean of its divisors is an integer number (109404960).

Almost surely, 2^609541881 is an apocalyptic number.

It is an amenable number.

609541881 is a deficient number, since it is larger than the sum of its proper divisors (265697799).

609541881 is a wasteful number, since it uses less digits than its factorization.

609541881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15629295.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 609541881 is about 24688.9019804446. The cubic root of 609541881 is about 847.8802456566.

It can be divided in two parts, 60954 and 1881, that added together give a triangular number (62835 = T₃₅₄).

The spelling of 609541881 in words is "six hundred nine million, five hundred forty-one thousand, eight hundred eighty-one".