1052438381 has 2 divisors, whose sum is σ = 1052438382. Its totient is φ = 1052438380.

The previous prime is 1052438377. The next prime is 1052438461. The reversal of 1052438381 is 1838342501.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1017035881 + 35402500 = 31891^2 + 5950^2 .

It is a cyclic number.

It is not a de Polignac number, because 1052438381 - 2² = 1052438377 is a prime.

It is a super-2 number, since 2×1052438381² = 2215253091603802322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1052438341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526219190 + 526219191.

It is an arithmetic number, because the mean of its divisors is an integer number (526219191).

Almost surely, 2^1052438381 is an apocalyptic number.

It is an amenable number.

1052438381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1052438381 is an equidigital number, since it uses as much as digits as its factorization.

1052438381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1052438381 is about 32441.3067091941. The cubic root of 1052438381 is about 1017.1825300095.

The spelling of 1052438381 in words is "one billion, fifty-two million, four hundred thirty-eight thousand, three hundred eighty-one".