4894740778 has 4 divisors (see below), whose sum is σ = 7342111170. Its totient is φ = 2447370388.

The previous prime is 4894740769. The next prime is 4894740779. The reversal of 4894740778 is 8770474984.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 3934174729 + 960566049 = 62723^2 + 30993^2 .

It is not an unprimeable number, because it can be changed into a prime (4894740779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223685193 + ... + 1223685196.

Almost surely, 2^4894740778 is an apocalyptic number.

4894740778 is a deficient number, since it is larger than the sum of its proper divisors (2447370392).

4894740778 is a wasteful number, since it uses less digits than its factorization.

4894740778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447370391.

The product of its (nonzero) digits is 12644352, while the sum is 58.

The square root of 4894740778 is about 69962.4240431962. The cubic root of 4894740778 is about 1697.8913622809.

The spelling of 4894740778 in words is "four billion, eight hundred ninety-four million, seven hundred forty thousand, seven hundred seventy-eight".