2078774958 has 64 divisors (see below), whose sum is σ = 4602830400. Its totient is φ = 621941760.

The previous prime is 2078774939. The next prime is 2078774963. The reversal of 2078774958 is 8594778702.

It is a junction number, because it is equal to n+sod(n) for n = 2078774898 and 2078774907.

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, 421008 + ... + 425916.

It is an arithmetic number, because the mean of its divisors is an integer number (71919225).

Almost surely, 2^2078774958 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2078774958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2301415200).

2078774958 is an abundant number, since it is smaller than the sum of its proper divisors (2524055442).

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

2078774958 is a wasteful number, since it uses less digits than its factorization.

2078774958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5077.

The product of its (nonzero) digits is 7902720, while the sum is 57.

The square root of 2078774958 is about 45593.5846145047. The cubic root of 2078774958 is about 1276.2502068446.

The spelling of 2078774958 in words is "two billion, seventy-eight million, seven hundred seventy-four thousand, nine hundred fifty-eight".