1290363673 has 4 divisors (see below), whose sum is σ = 1294567120. Its totient is φ = 1286160228.

The previous prime is 1290363667. The next prime is 1290363707. The reversal of 1290363673 is 3763630921.

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 1290363673 - 2²⁵ = 1256809241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1290363973) 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, 2101263 + ... + 2101876.

It is an arithmetic number, because the mean of its divisors is an integer number (323641780).

Almost surely, 2^1290363673 is an apocalyptic number.

It is an amenable number.

1290363673 is a deficient number, since it is larger than the sum of its proper divisors (4203447).

1290363673 is an equidigital number, since it uses as much as digits as its factorization.

1290363673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203446.

The product of its (nonzero) digits is 122472, while the sum is 40.

The square root of 1290363673 is about 35921.6323821733. The cubic root of 1290363673 is about 1088.6895209434.

The spelling of 1290363673 in words is "one billion, two hundred ninety million, three hundred sixty-three thousand, six hundred seventy-three".