1052438391 has 24 divisors (see below), whose sum is σ = 1576614000. Its totient is φ = 675706752.

The previous prime is 1052438381. The next prime is 1052438461. The reversal of 1052438391 is 1938342501.

1052438391 is a `hidden beast` number, since 10 + 524 + 38 + 3 + 91 = 666.

It is not a de Polignac number, because 1052438391 - 2⁶ = 1052438327 is a prime.

It is a super-2 number, since 2×1052438391² = 2215253133701337762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052438341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101820 + ... + 111678.

It is an arithmetic number, because the mean of its divisors is an integer number (65692250).

Almost surely, 2^1052438391 is an apocalyptic number.

1052438391 is a deficient number, since it is larger than the sum of its proper divisors (524175609).

1052438391 is a wasteful number, since it uses less digits than its factorization.

1052438391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10303 (or 10300 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1052438391 is about 32441.3068633186. The cubic root of 1052438391 is about 1017.1825332312.

The spelling of 1052438391 in words is "one billion, fifty-two million, four hundred thirty-eight thousand, three hundred ninety-one".