1630515245 has 4 divisors (see below), whose sum is σ = 1956618300. Its totient is φ = 1304412192.

The previous prime is 1630515233. The next prime is 1630515247. The reversal of 1630515245 is 5425150361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 279658729 + 1350856516 = 16723^2 + 36754^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630515245 - 2⁶ = 1630515181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630515247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163051520 + ... + 163051529.

It is an arithmetic number, because the mean of its divisors is an integer number (489154575).

Almost surely, 2^1630515245 is an apocalyptic number.

It is an amenable number.

1630515245 is a deficient number, since it is larger than the sum of its proper divisors (326103055).

1630515245 is an equidigital number, since it uses as much as digits as its factorization.

1630515245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326103054.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 1630515245 is about 40379.6389904615. The cubic root of 1630515245 is about 1176.9959123888.

The spelling of 1630515245 in words is "one billion, six hundred thirty million, five hundred fifteen thousand, two hundred forty-five".