2503664642 has 4 divisors (see below), whose sum is σ = 3755496966. Its totient is φ = 1251832320.

The previous prime is 2503664641. The next prime is 2503664651. The reversal of 2503664642 is 2464663052.

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., 2477152441 + 26512201 = 49771^2 + 5149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2503664596 and 2503664605.

It is not an unprimeable number, because it can be changed into a prime (2503664641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625916159 + ... + 625916162.

Almost surely, 2^2503664642 is an apocalyptic number.

2503664642 is a deficient number, since it is larger than the sum of its proper divisors (1251832324).

2503664642 is a wasteful number, since it uses less digits than its factorization.

2503664642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251832323.

The product of its (nonzero) digits is 207360, while the sum is 38.

The square root of 2503664642 is about 50036.6330002329. The cubic root of 2503664642 is about 1357.8716424498.

The spelling of 2503664642 in words is "two billion, five hundred three million, six hundred sixty-four thousand, six hundred forty-two".