1297532481 has 8 divisors (see below), whose sum is σ = 1977192384. Its totient is φ = 741447120.

The previous prime is 1297532479. The next prime is 1297532491. The reversal of 1297532481 is 1842357921.

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

It is not a de Polignac number, because 1297532481 - 2¹ = 1297532479 is a prime.

It is a super-2 number, since 2×1297532481² = 3367181078500030722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1297532491) 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, 30893610 + ... + 30893651.

It is an arithmetic number, because the mean of its divisors is an integer number (247149048).

Almost surely, 2^1297532481 is an apocalyptic number.

It is an amenable number.

1297532481 is a deficient number, since it is larger than the sum of its proper divisors (679659903).

1297532481 is an equidigital number, since it uses as much as digits as its factorization.

1297532481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61787271.

The product of its digits is 120960, while the sum is 42.

The square root of 1297532481 is about 36021.2781699928. The cubic root of 1297532481 is about 1090.7019245102.

The spelling of 1297532481 in words is "one billion, two hundred ninety-seven million, five hundred thirty-two thousand, four hundred eighty-one".