2678491758 has 16 divisors (see below), whose sum is σ = 5481565056. Its totient is φ = 872067000.

The previous prime is 2678491727. The next prime is 2678491847. The reversal of 2678491758 is 8571948762.

It is a junction number, because it is equal to n+sod(n) for n = 2678491698 and 2678491707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5190618 + ... + 5191133.

It is an arithmetic number, because the mean of its divisors is an integer number (342597816).

Almost surely, 2^2678491758 is an apocalyptic number.

2678491758 is an abundant number, since it is smaller than the sum of its proper divisors (2803073298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2678491758 is a wasteful number, since it uses less digits than its factorization.

2678491758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10381799.

The product of its digits is 6773760, while the sum is 57.

The square root of 2678491758 is about 51754.1472541090. The cubic root of 2678491758 is about 1388.7692914101.

The spelling of 2678491758 in words is "two billion, six hundred seventy-eight million, four hundred ninety-one thousand, seven hundred fifty-eight".