1540769069 has 8 divisors (see below), whose sum is σ = 1777975680. Its totient is φ = 1307836656.

The previous prime is 1540769063. The next prime is 1540769141. The reversal of 1540769069 is 9609670451.

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

It is a de Polignac number, because none of the positive numbers 2^k-1540769069 is a prime.

It is a super-2 number, since 2×1540769069² = 4747938647974253522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 1067774 + ... + 1069215.

It is an arithmetic number, because the mean of its divisors is an integer number (222246960).

Almost surely, 2^1540769069 is an apocalyptic number.

It is an amenable number.

1540769069 is a deficient number, since it is larger than the sum of its proper divisors (237206611).

1540769069 is a wasteful number, since it uses less digits than its factorization.

1540769069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137099.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 1540769069 is about 39252.6313640245. The cubic root of 1540769069 is about 1154.9925523154.

The spelling of 1540769069 in words is "one billion, five hundred forty million, seven hundred sixty-nine thousand, sixty-nine".