2658933681 has 16 divisors (see below), whose sum is σ = 3716180160. Its totient is φ = 1689166080.

The previous prime is 2658933661. The next prime is 2658933691. The reversal of 2658933681 is 1863398562.

It is a happy number.

It is not a de Polignac number, because 2658933681 - 2⁵ = 2658933649 is a prime.

It is a super-2 number, since 2×2658933681² = 14139856639912419522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2658933601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246076 + ... + 256653.

It is an arithmetic number, because the mean of its divisors is an integer number (232261260).

Almost surely, 2^2658933681 is an apocalyptic number.

It is an amenable number.

2658933681 is a deficient number, since it is larger than the sum of its proper divisors (1057246479).

2658933681 is a wasteful number, since it uses less digits than its factorization.

2658933681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502816.

The product of its digits is 1866240, while the sum is 51.

The square root of 2658933681 is about 51564.8492773905. The cubic root of 2658933681 is about 1385.3808127120.

The spelling of 2658933681 in words is "two billion, six hundred fifty-eight million, nine hundred thirty-three thousand, six hundred eighty-one".