2645249452 has 6 divisors (see below), whose sum is σ = 4629186548. Its totient is φ = 1322624724.

The previous prime is 2645249443. The next prime is 2645249479. The reversal of 2645249452 is 2549425462.

It is a junction number, because it is equal to n+sod(n) for n = 2645249399 and 2645249408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330656178 + ... + 330656185.

Almost surely, 2^2645249452 is an apocalyptic number.

It is an amenable number.

2645249452 is a deficient number, since it is larger than the sum of its proper divisors (1983937096).

2645249452 is a wasteful number, since it uses less digits than its factorization.

2645249452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661312367 (or 661312365 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The square root of 2645249452 is about 51431.9886063139. The cubic root of 2645249452 is about 1383.0000984652. Note that the first 4 decimals are identical.

The spelling of 2645249452 in words is "two billion, six hundred forty-five million, two hundred forty-nine thousand, four hundred fifty-two".