1540769067 has 8 divisors (see below), whose sum is σ = 2282620880. Its totient is φ = 1027179360.

The previous prime is 1540769063. The next prime is 1540769141. The reversal of 1540769067 is 7609670451.

It is a happy number.

It is not a de Polignac number, because 1540769067 - 2² = 1540769063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540769063) 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 7 ways as a sum of consecutive naturals, for example, 28532734 + ... + 28532787.

It is an arithmetic number, because the mean of its divisors is an integer number (285327610).

Almost surely, 2^1540769067 is an apocalyptic number.

1540769067 is a deficient number, since it is larger than the sum of its proper divisors (741851813).

1540769067 is an equidigital number, since it uses as much as digits as its factorization.

1540769067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57065530 (or 57065524 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 1540769067 is about 39252.6313385485. The cubic root of 1540769067 is about 1154.9925518157.

The spelling of 1540769067 in words is "one billion, five hundred forty million, seven hundred sixty-nine thousand, sixty-seven".