2545947169 has 8 divisors (see below), whose sum is σ = 2560940928. Its totient is φ = 2530995120.

The previous prime is 2545947163. The next prime is 2545947191. The reversal of 2545947169 is 9617495452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2545947169 is a prime.

It is a super-2 number, since 2×2545947169² = 12963693974678229122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2545947163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116499 + ... + 136615.

It is an arithmetic number, because the mean of its divisors is an integer number (320117616).

Almost surely, 2^2545947169 is an apocalyptic number.

It is an amenable number.

2545947169 is a deficient number, since it is larger than the sum of its proper divisors (14993759).

2545947169 is a wasteful number, since it uses less digits than its factorization.

2545947169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20855.

The product of its digits is 2721600, while the sum is 52.

The square root of 2545947169 is about 50457.3797278456. The cubic root of 2545947169 is about 1365.4730378023.

The spelling of 2545947169 in words is "two billion, five hundred forty-five million, nine hundred forty-seven thousand, one hundred sixty-nine".