1540634535730 has 8 divisors (see below), whose sum is σ = 2773142164332. Its totient is φ = 616253814288.

The previous prime is 1540634535707. The next prime is 1540634535733. The reversal of 1540634535730 is 375354360451.

It is a Cunningham number, because it is equal to 1241223²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 1540634535729 + 1 = 1241223^2 + 1^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1540634535733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77031726777 + ... + 77031726796.

Almost surely, 2^{1540634535730} is an apocalyptic number.

1540634535730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1540634535730 is a deficient number, since it is larger than the sum of its proper divisors (1232507628602).

1540634535730 is a wasteful number, since it uses less digits than its factorization.

1540634535730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154063453580.

The product of its (nonzero) digits is 2268000, while the sum is 46.

The spelling of 1540634535730 in words is "one trillion, five hundred forty billion, six hundred thirty-four million, five hundred thirty-five thousand, seven hundred thirty".