1303906873 has 4 divisors (see below), whose sum is σ = 1304771328. Its totient is φ = 1303042420.

The previous prime is 1303906867. The next prime is 1303906913. The reversal of 1303906873 is 3786093031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3786093031 = 7 ⋅540870433.

It is a cyclic number.

It is not a de Polignac number, because 1303906873 - 2²¹ = 1301809721 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303906573) 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, 429961 + ... + 432982.

It is an arithmetic number, because the mean of its divisors is an integer number (326192832).

Almost surely, 2^1303906873 is an apocalyptic number.

It is an amenable number.

1303906873 is a deficient number, since it is larger than the sum of its proper divisors (864455).

1303906873 is an equidigital number, since it uses as much as digits as its factorization.

1303906873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864454.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 1303906873 is about 36109.6506906395. The cubic root of 1303906873 is about 1092.4851058962.

The spelling of 1303906873 in words is "one billion, three hundred three million, nine hundred six thousand, eight hundred seventy-three".