1020038993 has 2 divisors, whose sum is σ = 1020038994. Its totient is φ = 1020038992.

The previous prime is 1020038989. The next prime is 1020039019. The reversal of 1020038993 is 3998300201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 833361424 + 186677569 = 28868^2 + 13663^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020038993 - 2² = 1020038989 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020038093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510019496 + 510019497.

It is an arithmetic number, because the mean of its divisors is an integer number (510019497).

Almost surely, 2^1020038993 is an apocalyptic number.

It is an amenable number.

1020038993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020038993 is an equidigital number, since it uses as much as digits as its factorization.

1020038993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1020038993 is about 31938.0492986031. The cubic root of 1020038993 is about 1006.6355365991.

The spelling of 1020038993 in words is "one billion, twenty million, thirty-eight thousand, nine hundred ninety-three".