2645866486 has 4 divisors (see below), whose sum is σ = 3968799732. Its totient is φ = 1322933242.

The previous prime is 2645866471. The next prime is 2645866511. The reversal of 2645866486 is 6846685462.

It is a semiprime because it is the product of two primes.

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, 661466620 + ... + 661466623.

It is an arithmetic number, because the mean of its divisors is an integer number (992199933).

Almost surely, 2^2645866486 is an apocalyptic number.

2645866486 is a deficient number, since it is larger than the sum of its proper divisors (1322933246).

2645866486 is a wasteful number, since it uses less digits than its factorization.

2645866486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322933245.

The product of its digits is 13271040, while the sum is 55.

The square root of 2645866486 is about 51437.9867996406. The cubic root of 2645866486 is about 1383.1076235153.

The spelling of 2645866486 in words is "two billion, six hundred forty-five million, eight hundred sixty-six thousand, four hundred eighty-six".