1280073097 has 4 divisors (see below), whose sum is σ = 1280288016. Its totient is φ = 1279858180.

The previous prime is 1280073083. The next prime is 1280073121. The reversal of 1280073097 is 7903700821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1280073097 - 2¹⁵ = 1280040329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1280073007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98263 + ... + 110524.

It is an arithmetic number, because the mean of its divisors is an integer number (320072004).

Almost surely, 2^1280073097 is an apocalyptic number.

It is an amenable number.

1280073097 is a deficient number, since it is larger than the sum of its proper divisors (214919).

1280073097 is an equidigital number, since it uses as much as digits as its factorization.

1280073097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214918.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 1280073097 is about 35778.1091870434. The cubic root of 1280073097 is about 1085.7877145554.

The spelling of 1280073097 in words is "one billion, two hundred eighty million, seventy-three thousand, ninety-seven".