2764636389 has 12 divisors (see below), whose sum is σ = 4122182272. Its totient is φ = 1783636200.

The previous prime is 2764636379. The next prime is 2764636423. The reversal of 2764636389 is 9836364672.

2764636389 is a `hidden beast` number, since 276 + 4 + 6 + 363 + 8 + 9 = 666.

It is not a de Polignac number, because 2764636389 - 2⁷ = 2764636261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2764636319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4954267 + ... + 4954824.

Almost surely, 2^2764636389 is an apocalyptic number.

It is an amenable number.

2764636389 is a deficient number, since it is larger than the sum of its proper divisors (1357545883).

2764636389 is a wasteful number, since it uses less digits than its factorization.

2764636389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9909128 (or 9909125 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The square root of 2764636389 is about 52579.8097086705. The cubic root of 2764636389 is about 1403.5008285260.

The spelling of 2764636389 in words is "two billion, seven hundred sixty-four million, six hundred thirty-six thousand, three hundred eighty-nine".