1540257130 has 16 divisors (see below), whose sum is σ = 2775822120. Its totient is φ = 615356352.

The previous prime is 1540257107. The next prime is 1540257139. The reversal of 1540257130 is 317520451.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1536875209 + 3381921 = 39203^2 + 1839^2 .

It is not an unprimeable number, because it can be changed into a prime (1540257139) 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 7 ways as a sum of consecutive naturals, for example, 84609 + ... + 101188.

Almost surely, 2^1540257130 is an apocalyptic number.

1540257130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540257130 is a deficient number, since it is larger than the sum of its proper divisors (1235564990).

1540257130 is a wasteful number, since it uses less digits than its factorization.

1540257130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186633.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1540257130 is about 39246.1097435147. The cubic root of 1540257130 is about 1154.8646181031.

Adding to 1540257130 its reverse (317520451), we get a palindrome (1857777581).

The spelling of 1540257130 in words is "one billion, five hundred forty million, two hundred fifty-seven thousand, one hundred thirty".