1280677938 has 16 divisors (see below), whose sum is σ = 2696164320. Its totient is φ = 404424576.

The previous prime is 1280677861. The next prime is 1280677939. The reversal of 1280677938 is 8397760821.

It is not an unprimeable number, because it can be changed into a prime (1280677939) 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, 5616895 + ... + 5617122.

It is an arithmetic number, because the mean of its divisors is an integer number (168510270).

Almost surely, 2^1280677938 is an apocalyptic number.

1280677938 is an abundant number, since it is smaller than the sum of its proper divisors (1415486382).

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

1280677938 is a wasteful number, since it uses less digits than its factorization.

1280677938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11234041.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 1280677938 is about 35786.5608573945. The cubic root of 1280677938 is about 1085.9587010196.

The spelling of 1280677938 in words is "one billion, two hundred eighty million, six hundred seventy-seven thousand, nine hundred thirty-eight".