2545218936 has 224 divisors, whose sum is σ = 7849926000. Its totient is φ = 768517632.

The previous prime is 2545218931. The next prime is 2545218941. The reversal of 2545218936 is 6398125452.

2545218936 is a `hidden beast` number, since 2 + 545 + 2 + 18 + 93 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (2545218931) and next prime (2545218941).

It is a junction number, because it is equal to n+sod(n) for n = 2545218891 and 2545218900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545218931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4472860 + ... + 4473428.

Almost surely, 2^2545218936 is an apocalyptic number.

2545218936 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2545218936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3924963000).

2545218936 is an abundant number, since it is smaller than the sum of its proper divisors (5304707064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2545218936 is a wasteful number, since it uses less digits than its factorization.

2545218936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 646 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 2545218936 is about 50450.1628936914. The cubic root of 2545218936 is about 1365.3428338237.

The spelling of 2545218936 in words is "two billion, five hundred forty-five million, two hundred eighteen thousand, nine hundred thirty-six".