2658378005 has 4 divisors (see below), whose sum is σ = 3190053612. Its totient is φ = 2126702400.

The previous prime is 2658377971. The next prime is 2658378029. The reversal of 2658378005 is 5008738562.

2658378005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 946239121 + 1712138884 = 30761^2 + 41378^2 .

It is not a de Polignac number, because 2658378005 - 2¹⁸ = 2658115861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265837796 + ... + 265837805.

It is an arithmetic number, because the mean of its divisors is an integer number (797513403).

Almost surely, 2^2658378005 is an apocalyptic number.

It is an amenable number.

2658378005 is a deficient number, since it is larger than the sum of its proper divisors (531675607).

2658378005 is an equidigital number, since it uses as much as digits as its factorization.

2658378005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531675606.

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 2658378005 is about 51559.4608680114. The cubic root of 2658378005 is about 1385.2842982700.

The spelling of 2658378005 in words is "two billion, six hundred fifty-eight million, three hundred seventy-eight thousand, five".