1543352138 has 8 divisors (see below), whose sum is σ = 2318072580. Its totient is φ = 770661280.

The previous prime is 1543352119. The next prime is 1543352171. The reversal of 1543352138 is 8312533451.

It can be written as a sum of positive squares in 2 ways, for example, as 1330279729 + 213072409 = 36473^2 + 14597^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1543352098 and 1543352107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505493 + ... + 508536.

Almost surely, 2^1543352138 is an apocalyptic number.

1543352138 is a deficient number, since it is larger than the sum of its proper divisors (774720442).

1543352138 is a wasteful number, since it uses less digits than its factorization.

1543352138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014792.

The product of its digits is 43200, while the sum is 35.

The square root of 1543352138 is about 39285.5207169257. The cubic root of 1543352138 is about 1155.6376327172.

Adding to 1543352138 its reverse (8312533451), we get a palindrome (9855885589).

The spelling of 1543352138 in words is "one billion, five hundred forty-three million, three hundred fifty-two thousand, one hundred thirty-eight".