1540505038 has 8 divisors (see below), whose sum is σ = 2325476232. Its totient is φ = 765346296.

The previous prime is 1540505023. The next prime is 1540505039. The reversal of 1540505038 is 8305050451.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540505039) 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 3 ways as a sum of consecutive naturals, for example, 2452720 + ... + 2453347.

It is an arithmetic number, because the mean of its divisors is an integer number (290684529).

Almost surely, 2^1540505038 is an apocalyptic number.

1540505038 is a deficient number, since it is larger than the sum of its proper divisors (784971194).

1540505038 is a wasteful number, since it uses less digits than its factorization.

1540505038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906226.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 1540505038 is about 39249.2679931741. The cubic root of 1540505038 is about 1154.9265741695.

Adding to 1540505038 its reverse (8305050451), we get a palindrome (9845555489).

The spelling of 1540505038 in words is "one billion, five hundred forty million, five hundred five thousand, thirty-eight".