2245564642 has 4 divisors (see below), whose sum is σ = 3368346966. Its totient is φ = 1122782320.

The previous prime is 2245564621. The next prime is 2245564649. The reversal of 2245564642 is 2464655422.

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

It can be written as a sum of positive squares in only one way, i.e., 1860973321 + 384591321 = 43139^2 + 19611^2 .

It is a super-2 number, since 2×2245564642² = 10085121122801176328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2245564595 and 2245564604.

It is not an unprimeable number, because it can be changed into a prime (2245564649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561391159 + ... + 561391162.

Almost surely, 2^2245564642 is an apocalyptic number.

2245564642 is a deficient number, since it is larger than the sum of its proper divisors (1122782324).

2245564642 is a wasteful number, since it uses less digits than its factorization.

2245564642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122782323.

The product of its digits is 460800, while the sum is 40.

The square root of 2245564642 is about 47387.3890608039. The cubic root of 2245564642 is about 1309.5090991303.

The spelling of 2245564642 in words is "two billion, two hundred forty-five million, five hundred sixty-four thousand, six hundred forty-two".