2658038381 has 2 divisors, whose sum is σ = 2658038382. Its totient is φ = 2658038380.

The previous prime is 2658038359. The next prime is 2658038387. The reversal of 2658038381 is 1838308562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2610290281 + 47748100 = 51091^2 + 6910^2 .

It is a cyclic number.

It is not a de Polignac number, because 2658038381 - 2¹⁸ = 2657776237 is a prime.

It is a super-2 number, since 2×2658038381² = 14130336069738202322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2658038387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329019190 + 1329019191.

It is an arithmetic number, because the mean of its divisors is an integer number (1329019191).

Almost surely, 2^2658038381 is an apocalyptic number.

It is an amenable number.

2658038381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2658038381 is an equidigital number, since it uses as much as digits as its factorization.

2658038381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 2658038381 is about 51556.1672450542. The cubic root of 2658038381 is about 1385.2253029189.

The spelling of 2658038381 in words is "two billion, six hundred fifty-eight million, thirty-eight thousand, three hundred eighty-one".