1461656172 has 24 divisors (see below), whose sum is σ = 3489846976. Its totient is φ = 475887888.

The previous prime is 1461656171. The next prime is 1461656201. The reversal of 1461656172 is 2716561641.

It is a self number, because there is not a number n which added to its sum of digits gives 1461656172.

It is not an unprimeable number, because it can be changed into a prime (1461656171) 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, 1415818 + ... + 1416849.

Almost surely, 2^1461656172 is an apocalyptic number.

1461656172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1461656172 is an abundant number, since it is smaller than the sum of its proper divisors (2028190804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1461656172 is a wasteful number, since it uses less digits than its factorization.

1461656172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832717 (or 2832715 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 1461656172 is about 38231.6122077006. The cubic root of 1461656172 is about 1134.8759907725.

The spelling of 1461656172 in words is "one billion, four hundred sixty-one million, six hundred fifty-six thousand, one hundred seventy-two".