2658378004 has 6 divisors (see below), whose sum is σ = 4652161514. Its totient is φ = 1329189000.

The previous prime is 2658377971. The next prime is 2658378029. The reversal of 2658378004 is 4008738562.

It can be written as a sum of positive squares in only one way, i.e., 1990052100 + 668325904 = 44610^2 + 25852^2 .

It is a super-2 number, since 2×2658378004² = 14133947224302048032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332297247 + ... + 332297254.

Almost surely, 2^2658378004 is an apocalyptic number.

It is an amenable number.

2658378004 is a deficient number, since it is larger than the sum of its proper divisors (1993783510).

2658378004 is a wasteful number, since it uses less digits than its factorization.

2658378004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664594505 (or 664594503 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 2658378004 is about 51559.4608583139. The cubic root of 2658378004 is about 1385.2842980963.

The spelling of 2658378004 in words is "two billion, six hundred fifty-eight million, three hundred seventy-eight thousand, four".