1545664161 has 8 divisors (see below), whose sum is σ = 2072272384. Its totient is φ = 1024749360.

The previous prime is 1545664129. The next prime is 1545664163. The reversal of 1545664161 is 1614665451.

It is a happy number.

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

It is not a de Polignac number, because 1545664161 - 2⁵ = 1545664129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1545664163) 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, 1422721 + ... + 1423806.

It is an arithmetic number, because the mean of its divisors is an integer number (259034048).

Almost surely, 2^1545664161 is an apocalyptic number.

It is an amenable number.

1545664161 is a deficient number, since it is larger than the sum of its proper divisors (526608223).

1545664161 is a wasteful number, since it uses less digits than its factorization.

1545664161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846711.

The product of its digits is 86400, while the sum is 39.

The square root of 1545664161 is about 39314.9355970476. The cubic root of 1545664161 is about 1156.2144135295.

The spelling of 1545664161 in words is "one billion, five hundred forty-five million, six hundred sixty-four thousand, one hundred sixty-one".