1280678097 has 16 divisors (see below), whose sum is σ = 1717448832. Its totient is φ = 848858880.

The previous prime is 1280678093. The next prime is 1280678129. The reversal of 1280678097 is 7908760821.

It is not a de Polignac number, because 1280678097 - 2² = 1280678093 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1280678093) 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, 640303 + ... + 642299.

It is an arithmetic number, because the mean of its divisors is an integer number (107340552).

Almost surely, 2^1280678097 is an apocalyptic number.

It is an amenable number.

1280678097 is a deficient number, since it is larger than the sum of its proper divisors (436770735).

1280678097 is a wasteful number, since it uses less digits than its factorization.

1280678097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128.

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 1280678097 is about 35786.5630788988. The cubic root of 1280678097 is about 1085.9587459613.

The spelling of 1280678097 in words is "one billion, two hundred eighty million, six hundred seventy-eight thousand, ninety-seven".