3128954993 has 2 divisors, whose sum is σ = 3128954994. Its totient is φ = 3128954992.

The previous prime is 3128954989. The next prime is 3128955001. The reversal of 3128954993 is 3994598213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3112858849 + 16096144 = 55793^2 + 4012^2 .

It is a cyclic number.

It is not a de Polignac number, because 3128954993 - 2² = 3128954989 is a prime.

It is not a weakly prime, because it can be changed into another prime (3128954393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564477496 + 1564477497.

It is an arithmetic number, because the mean of its divisors is an integer number (1564477497).

Almost surely, 2^3128954993 is an apocalyptic number.

It is an amenable number.

3128954993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3128954993 is an equidigital number, since it uses as much as digits as its factorization.

3128954993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 53.

The square root of 3128954993 is about 55937.0627848835. The cubic root of 3128954993 is about 1462.6253808109.

The spelling of 3128954993 in words is "three billion, one hundred twenty-eight million, nine hundred fifty-four thousand, nine hundred ninety-three".