1461987271 has 8 divisors (see below), whose sum is σ = 1469595600. Its totient is φ = 1454399232.

The previous prime is 1461987251. The next prime is 1461987283. The reversal of 1461987271 is 1727891641.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1461987271 - 2¹¹ = 1461985223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461987251) 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, 151705 + ... + 161053.

It is an arithmetic number, because the mean of its divisors is an integer number (183699450).

Almost surely, 2^1461987271 is an apocalyptic number.

1461987271 is a deficient number, since it is larger than the sum of its proper divisors (7608329).

1461987271 is an equidigital number, since it uses as much as digits as its factorization.

1461987271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10145.

The product of its digits is 169344, while the sum is 46.

The square root of 1461987271 is about 38235.9421356399. The cubic root of 1461987271 is about 1134.9616762080.

The spelling of 1461987271 in words is "one billion, four hundred sixty-one million, nine hundred eighty-seven thousand, two hundred seventy-one".