2545963969 has 8 divisors (see below), whose sum is σ = 2704939560. Its totient is φ = 2391734016.

The previous prime is 2545963949. The next prime is 2545963997. The reversal of 2545963969 is 9693695452.

It can be written as a sum of positive squares in 4 ways, for example, as 1243620225 + 1302343744 = 35265^2 + 36088^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2545963969 - 2¹¹ = 2545961921 is a prime.

It is a super-2 number, since 2×2545963969² = 12963865062892465922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2545963949) 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, 1185304 + ... + 1187449.

It is an arithmetic number, because the mean of its divisors is an integer number (338117445).

Almost surely, 2^2545963969 is an apocalyptic number.

2545963969 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2545963969 is a deficient number, since it is larger than the sum of its proper divisors (158975591).

2545963969 is a wasteful number, since it uses less digits than its factorization.

2545963969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372819.

The product of its digits is 15746400, while the sum is 58.

The square root of 2545963969 is about 50457.5462047056. The cubic root of 2545963969 is about 1365.4760412551.

The spelling of 2545963969 in words is "two billion, five hundred forty-five million, nine hundred sixty-three thousand, nine hundred sixty-nine".