1461416721 has 8 divisors (see below), whose sum is σ = 1949563200. Its totient is φ = 973774032.

The previous prime is 1461416717. The next prime is 1461416741. The reversal of 1461416721 is 1276141641.

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

It is not a de Polignac number, because 1461416721 - 2² = 1461416717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1461416741) 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, 119125 + ... + 130818.

It is an arithmetic number, because the mean of its divisors is an integer number (243695400).

Almost surely, 2^1461416721 is an apocalyptic number.

It is an amenable number.

1461416721 is a deficient number, since it is larger than the sum of its proper divisors (488146479).

1461416721 is a wasteful number, since it uses less digits than its factorization.

1461416721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251895.

The product of its digits is 8064, while the sum is 33.

The square root of 1461416721 is about 38228.4804955677. The cubic root of 1461416721 is about 1134.8140149498.

The spelling of 1461416721 in words is "one billion, four hundred sixty-one million, four hundred sixteen thousand, seven hundred twenty-one".