1281413478 has 16 divisors (see below), whose sum is σ = 2581266240. Its totient is φ = 424064616.

The previous prime is 1281413477. The next prime is 1281413479. The reversal of 1281413478 is 8743141821.

It is an interprime number because it is at equal distance from previous prime (1281413477) and next prime (1281413479).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281413477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767400 + ... + 769067.

It is an arithmetic number, because the mean of its divisors is an integer number (161329140).

Almost surely, 2^1281413478 is an apocalyptic number.

1281413478 is an abundant number, since it is smaller than the sum of its proper divisors (1299852762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1281413478 is a wasteful number, since it uses less digits than its factorization.

1281413478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536611.

The product of its digits is 43008, while the sum is 39.

The square root of 1281413478 is about 35796.8361451120. The cubic root of 1281413478 is about 1086.1665631130.

The spelling of 1281413478 in words is "one billion, two hundred eighty-one million, four hundred thirteen thousand, four hundred seventy-eight".