2621643382 has 16 divisors (see below), whose sum is σ = 3947095152. Its totient is φ = 1305954720.

The previous prime is 2621643377. The next prime is 2621643383. The reversal of 2621643382 is 2833461262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621643383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723808 + ... + 727420.

It is an arithmetic number, because the mean of its divisors is an integer number (246693447).

Almost surely, 2^2621643382 is an apocalyptic number.

2621643382 is a deficient number, since it is larger than the sum of its proper divisors (1325451770).

2621643382 is a wasteful number, since it uses less digits than its factorization.

2621643382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863.

The product of its digits is 82944, while the sum is 37.

The square root of 2621643382 is about 51201.9861138218. The cubic root of 2621643382 is about 1378.8738593275.

The spelling of 2621643382 in words is "two billion, six hundred twenty-one million, six hundred forty-three thousand, three hundred eighty-two".