1540136455 has 16 divisors (see below), whose sum is σ = 2171270304. Its totient is φ = 1033937280.

The previous prime is 1540136453. The next prime is 1540136459. The reversal of 1540136455 is 5546310451.

It is not a de Polignac number, because 1540136455 - 2¹ = 1540136453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1540136455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540136453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1076304 + ... + 1077733.

It is an arithmetic number, because the mean of its divisors is an integer number (135704394).

Almost surely, 2^1540136455 is an apocalyptic number.

1540136455 is a deficient number, since it is larger than the sum of its proper divisors (631133849).

1540136455 is a wasteful number, since it uses less digits than its factorization.

1540136455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154066.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1540136455 is about 39244.5722998735. The cubic root of 1540136455 is about 1154.8344571374.

The spelling of 1540136455 in words is "one billion, five hundred forty million, one hundred thirty-six thousand, four hundred fifty-five".