729181941 has 8 divisors (see below), whose sum is σ = 974344320. Its totient is φ = 485070432.

The previous prime is 729181939. The next prime is 729181979. The reversal of 729181941 is 149181927.

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

It is not a de Polignac number, because 729181941 - 2¹ = 729181939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 729181893 and 729181902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729181991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261096 + ... + 263873.

It is an arithmetic number, because the mean of its divisors is an integer number (121793040).

Almost surely, 2^729181941 is an apocalyptic number.

It is an amenable number.

729181941 is a deficient number, since it is larger than the sum of its proper divisors (245162379).

729181941 is a wasteful number, since it uses less digits than its factorization.

729181941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525435.

The product of its digits is 36288, while the sum is 42.

The square root of 729181941 is about 27003.3690675812. The cubic root of 729181941 is about 900.0748666115.

The spelling of 729181941 in words is "seven hundred twenty-nine million, one hundred eighty-one thousand, nine hundred forty-one".