1427739481 has 8 divisors (see below), whose sum is σ = 1636407360. Its totient is φ = 1220247888.

The previous prime is 1427739479. The next prime is 1427739491. The reversal of 1427739481 is 1849377241.

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 1427739481 - 2¹ = 1427739479 is a prime.

It is a super-2 number, since 2×1427739481² = 4076880051212298722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1427739431) 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, 291466 + ... + 296323.

It is an arithmetic number, because the mean of its divisors is an integer number (204550920).

Almost surely, 2^1427739481 is an apocalyptic number.

It is an amenable number.

1427739481 is a deficient number, since it is larger than the sum of its proper divisors (208667879).

1427739481 is an equidigital number, since it uses as much as digits as its factorization.

1427739481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588143.

The product of its digits is 338688, while the sum is 46.

The square root of 1427739481 is about 37785.4400662477. The cubic root of 1427739481 is about 1126.0292095120.

The spelling of 1427739481 in words is "one billion, four hundred twenty-seven million, seven hundred thirty-nine thousand, four hundred eighty-one".