1052638381 has 2 divisors, whose sum is σ = 1052638382. Its totient is φ = 1052638380.

The previous prime is 1052638373. The next prime is 1052638393. The reversal of 1052638381 is 1838362501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1037162025 + 15476356 = 32205^2 + 3934^2 .

It is a cyclic number.

It is not a de Polignac number, because 1052638381 - 2³ = 1052638373 is a prime.

It is a super-3 number, since 3×1052638381³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1052638381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1052632381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526319190 + 526319191.

It is an arithmetic number, because the mean of its divisors is an integer number (526319191).

Almost surely, 2^1052638381 is an apocalyptic number.

It is an amenable number.

1052638381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1052638381 is an equidigital number, since it uses as much as digits as its factorization.

1052638381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1052638381 is about 32444.3890526544. The cubic root of 1052638381 is about 1017.2469593147.

The spelling of 1052638381 in words is "one billion, fifty-two million, six hundred thirty-eight thousand, three hundred eighty-one".