2564812046 has 4 divisors (see below), whose sum is σ = 3847218072. Its totient is φ = 1282406022.

The previous prime is 2564812037. The next prime is 2564812051. The reversal of 2564812046 is 6402184652.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2564812046² = 13156521662613412232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 641203010 + ... + 641203013.

It is an arithmetic number, because the mean of its divisors is an integer number (961804518).

Almost surely, 2^2564812046 is an apocalyptic number.

2564812046 is a deficient number, since it is larger than the sum of its proper divisors (1282406026).

2564812046 is a wasteful number, since it uses less digits than its factorization.

2564812046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282406025.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 2564812046 is about 50643.9734420592. The cubic root of 2564812046 is about 1368.8373544855.

Adding to 2564812046 its reverse (6402184652), we get a palindrome (8966996698).

The spelling of 2564812046 in words is "two billion, five hundred sixty-four million, eight hundred twelve thousand, forty-six".