1273493881 has 8 divisors (see below), whose sum is σ = 1390753728. Its totient is φ = 1156482000.

The previous prime is 1273493873. The next prime is 1273493899. The reversal of 1273493881 is 1883943721.

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 1273493881 - 2³ = 1273493873 is a prime.

It is a super-2 number, since 2×1273493881² = 3243573329888884322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1273493801) 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, 51165 + ... + 71866.

It is an arithmetic number, because the mean of its divisors is an integer number (173844216).

Almost surely, 2^1273493881 is an apocalyptic number.

1273493881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1273493881 is a deficient number, since it is larger than the sum of its proper divisors (117259847).

1273493881 is a wasteful number, since it uses less digits than its factorization.

1273493881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123983.

The product of its digits is 290304, while the sum is 46.

The square root of 1273493881 is about 35686.0460264233. The cubic root of 1273493881 is about 1083.9243038535.

The spelling of 1273493881 in words is "one billion, two hundred seventy-three million, four hundred ninety-three thousand, eight hundred eighty-one".