1540136005 has 8 divisors (see below), whose sum is σ = 1928518272. Its totient is φ = 1178538768.

The previous prime is 1540135963. The next prime is 1540136009. The reversal of 1540136005 is 5006310451.

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

It is not a de Polignac number, because 1540136005 - 2¹⁵ = 1540103237 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 (1540136009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6696129 + ... + 6696358.

It is an arithmetic number, because the mean of its divisors is an integer number (241064784).

Almost surely, 2^1540136005 is an apocalyptic number.

It is an amenable number.

1540136005 is a deficient number, since it is larger than the sum of its proper divisors (388382267).

1540136005 is a wasteful number, since it uses less digits than its factorization.

1540136005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13392515.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1540136005 is about 39244.5665665962. The cubic root of 1540136005 is about 1154.8343446635.

Adding to 1540136005 its reverse (5006310451), we get a palindrome (6546446456).

The spelling of 1540136005 in words is "one billion, five hundred forty million, one hundred thirty-six thousand, five".