4993402178 has 18 divisors (see below), whose sum is σ = 7761793689. Its totient is φ = 2409208872.

The previous prime is 4993402171. The next prime is 4993402201. The reversal of 4993402178 is 8712043994.

It can be written as a sum of positive squares in 2 ways, for example, as 4990433449 + 2968729 = 70643^2 + 1723^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=49967.

It is a super-2 number, since 2×4993402178² = 49868130622510287368, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4993402171) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2897225 + ... + 2898947.

Almost surely, 2^4993402178 is an apocalyptic number.

4993402178 is a deficient number, since it is larger than the sum of its proper divisors (2768391511).

4993402178 is an frugal number, since it uses more digits than its factorization.

4993402178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3506 (or 1754 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 4993402178 is about 70664.0090710964. The cubic root of 4993402178 is about 1709.2234744730.

The spelling of 4993402178 in words is "four billion, nine hundred ninety-three million, four hundred two thousand, one hundred seventy-eight".