1051638343 has 36 divisors (see below), whose sum is σ = 1315556400. Its totient is φ = 840143808.

The previous prime is 1051638331. The next prime is 1051638403. The reversal of 1051638343 is 3438361501.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 1051638343 - 2²¹ = 1049541191 is a prime.

It is a super-2 number, since 2×1051638343² = 2211886408935571298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1051638299 and 1051638308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051638323) 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 in 35 ways as a sum of consecutive naturals, for example, 10210030 + ... + 10210132.

Almost surely, 2^1051638343 is an apocalyptic number.

1051638343 is a deficient number, since it is larger than the sum of its proper divisors (263918057).

1051638343 is an frugal number, since it uses more digits than its factorization.

1051638343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1051638343 is about 32428.9738197187. The cubic root of 1051638343 is about 1016.9247188841.

Adding to 1051638343 its reverse (3438361501), we get a palindrome (4489999844).

The spelling of 1051638343 in words is "one billion, fifty-one million, six hundred thirty-eight thousand, three hundred forty-three".