2643240916 has 12 divisors (see below), whose sum is σ = 4774887040. Its totient is φ = 1278987480.

The previous prime is 2643240913. The next prime is 2643240961. The reversal of 2643240916 is 6190423462.

It is a happy number.

It is a super-3 number, since 3×2643240916³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643240913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10658106 + ... + 10658353.

Almost surely, 2^2643240916 is an apocalyptic number.

It is an amenable number.

2643240916 is a deficient number, since it is larger than the sum of its proper divisors (2131646124).

2643240916 is a wasteful number, since it uses less digits than its factorization.

2643240916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21316494 (or 21316492 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 2643240916 is about 51412.4587624440. The cubic root of 2643240916 is about 1382.6499728413.

The spelling of 2643240916 in words is "two billion, six hundred forty-three million, two hundred forty thousand, nine hundred sixteen".