2478393766 has 64 divisors (see below), whose sum is σ = 4114022400. Its totient is φ = 1116662400.

The previous prime is 2478393703. The next prime is 2478393781. The reversal of 2478393766 is 6673938742.

2478393766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2478393766² = 12284871318695325512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6470811 + ... + 6471193.

It is an arithmetic number, because the mean of its divisors is an integer number (64281600).

Almost surely, 2^2478393766 is an apocalyptic number.

2478393766 is a deficient number, since it is larger than the sum of its proper divisors (1635628634).

2478393766 is a wasteful number, since it uses less digits than its factorization.

2478393766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565.

The product of its digits is 9144576, while the sum is 55.

The square root of 2478393766 is about 49783.4688024047. The cubic root of 2478393766 is about 1353.2876006909.

The spelling of 2478393766 in words is "two billion, four hundred seventy-eight million, three hundred ninety-three thousand, seven hundred sixty-six".