1276616481 has 16 divisors (see below), whose sum is σ = 1971970944. Its totient is φ = 719501184.

The previous prime is 1276616477. The next prime is 1276616501. The reversal of 1276616481 is 1846166721.

It is not a de Polignac number, because 1276616481 - 2² = 1276616477 is a prime.

It is a super-2 number, since 2×1276616481² = 3259499279121646722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1276616461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414846 + ... + 417911.

It is an arithmetic number, because the mean of its divisors is an integer number (123248184).

Almost surely, 2^1276616481 is an apocalyptic number.

It is an amenable number.

1276616481 is a deficient number, since it is larger than the sum of its proper divisors (695354463).

1276616481 is an equidigital number, since it uses as much as digits as its factorization.

1276616481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832840.

The product of its digits is 96768, while the sum is 42.

The square root of 1276616481 is about 35729.7702343578. The cubic root of 1276616481 is about 1084.8095062229.

The spelling of 1276616481 in words is "one billion, two hundred seventy-six million, six hundred sixteen thousand, four hundred eighty-one".