2521630193 has 2 divisors, whose sum is σ = 2521630194. Its totient is φ = 2521630192.

The previous prime is 2521630187. The next prime is 2521630217. The reversal of 2521630193 is 3910361252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1485562849 + 1036067344 = 38543^2 + 32188^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521630193 - 2²² = 2517435889 is a prime.

It is not a weakly prime, because it can be changed into another prime (2521630103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260815096 + 1260815097.

It is an arithmetic number, because the mean of its divisors is an integer number (1260815097).

Almost surely, 2^2521630193 is an apocalyptic number.

It is an amenable number.

2521630193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521630193 is an equidigital number, since it uses as much as digits as its factorization.

2521630193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 2521630193 is about 50215.8360778749. The cubic root of 2521630193 is about 1361.1117986507. Note that the first 3 decimals are identical.

The spelling of 2521630193 in words is "two billion, five hundred twenty-one million, six hundred thirty thousand, one hundred ninety-three".