2578780654 has 8 divisors (see below), whose sum is σ = 4036352400. Its totient is φ = 1233329856.

The previous prime is 2578780651. The next prime is 2578780661. The reversal of 2578780654 is 4560878752.

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

It is a super-2 number, since 2×2578780654² = 13300219322889335432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578780651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28030179 + ... + 28030270.

It is an arithmetic number, because the mean of its divisors is an integer number (504544050).

Almost surely, 2^2578780654 is an apocalyptic number.

2578780654 is a deficient number, since it is larger than the sum of its proper divisors (1457571746).

2578780654 is a wasteful number, since it uses less digits than its factorization.

2578780654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56060474.

The product of its (nonzero) digits is 3763200, while the sum is 52.

The square root of 2578780654 is about 50781.6960528102. The cubic root of 2578780654 is about 1371.3178669744.

The spelling of 2578780654 in words is "two billion, five hundred seventy-eight million, seven hundred eighty thousand, six hundred fifty-four".