280796137 has 2 divisors, whose sum is σ = 280796138. Its totient is φ = 280796136.

The previous prime is 280796107. The next prime is 280796143. The reversal of 280796137 is 731697082.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189860841 + 90935296 = 13779^2 + 9536^2 .

It is a cyclic number.

It is not a de Polignac number, because 280796137 - 2¹¹ = 280794089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 280796093 and 280796102.

It is not a weakly prime, because it can be changed into another prime (280796107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140398068 + 140398069.

It is an arithmetic number, because the mean of its divisors is an integer number (140398069).

Almost surely, 2^280796137 is an apocalyptic number.

It is an amenable number.

280796137 is a deficient number, since it is larger than the sum of its proper divisors (1).

280796137 is an equidigital number, since it uses as much as digits as its factorization.

280796137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 280796137 is about 16756.9727874697. The cubic root of 280796137 is about 654.8327269378.

The spelling of 280796137 in words is "two hundred eighty million, seven hundred ninety-six thousand, one hundred thirty-seven".