1540325143 has 6 divisors (see below), whose sum is σ = 1791806856. Its totient is φ = 1320278652.

The previous prime is 1540325141. The next prime is 1540325153. The reversal of 1540325143 is 3415230451.

It is not a de Polignac number, because 1540325143 - 2¹ = 1540325141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540325141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15717555 + ... + 15717652.

It is an arithmetic number, because the mean of its divisors is an integer number (298634476).

Almost surely, 2^1540325143 is an apocalyptic number.

1540325143 is a deficient number, since it is larger than the sum of its proper divisors (251481713).

1540325143 is an equidigital number, since it uses as much as digits as its factorization.

1540325143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31435221 (or 31435214 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1540325143 is about 39246.9762274752. The cubic root of 1540325143 is about 1154.8816162717.

Adding to 1540325143 its reverse (3415230451), we get a palindrome (4955555594).

The spelling of 1540325143 in words is "one billion, five hundred forty million, three hundred twenty-five thousand, one hundred forty-three".