1540540351 has 6 divisors (see below), whose sum is σ = 1792057200. Its totient is φ = 1320463116.

The previous prime is 1540540333. The next prime is 1540540373. The reversal of 1540540351 is 1530450451.

It is not a de Polignac number, because 1540540351 - 2⁷ = 1540540223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540540151) 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, 15719751 + ... + 15719848.

It is an arithmetic number, because the mean of its divisors is an integer number (298676200).

Almost surely, 2^1540540351 is an apocalyptic number.

1540540351 is a deficient number, since it is larger than the sum of its proper divisors (251516849).

1540540351 is an equidigital number, since it uses as much as digits as its factorization.

1540540351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31439613 (or 31439606 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1540540351 is about 39249.7178461196. The cubic root of 1540540351 is about 1154.9353988968.

The spelling of 1540540351 in words is "one billion, five hundred forty million, five hundred forty thousand, three hundred fifty-one".