1540513161 has 20 divisors (see below), whose sum is σ = 2510467344. Its totient is φ = 933643800.

The previous prime is 1540513151. The next prime is 1540513207. The reversal of 1540513161 is 1613150451.

It is not a de Polignac number, because 1540513161 - 2¹⁵ = 1540480393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1540513151) 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 19 ways as a sum of consecutive naturals, for example, 863595 + ... + 865376.

Almost surely, 2^1540513161 is an apocalyptic number.

1540513161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1540513161 is a deficient number, since it is larger than the sum of its proper divisors (969954183).

1540513161 is a wasteful number, since it uses less digits than its factorization.

1540513161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728994 (or 1728985 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1540513161 is about 39249.3714726746. The cubic root of 1540513161 is about 1154.9286041211.

The spelling of 1540513161 in words is "one billion, five hundred forty million, five hundred thirteen thousand, one hundred sixty-one".