645113130 has 32 divisors (see below), whose sum is σ = 1590119424. Its totient is φ = 167380416.

The previous prime is 645113123. The next prime is 645113197. The reversal of 645113130 is 31311546.

645113130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 645113130.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289482 + ... + 291701.

It is an arithmetic number, because the mean of its divisors is an integer number (49691232).

Almost surely, 2^645113130 is an apocalyptic number.

645113130 is an abundant number, since it is smaller than the sum of its proper divisors (945006294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

645113130 is a wasteful number, since it uses less digits than its factorization.

645113130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581230.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 645113130 is about 25399.0773454470. The cubic root of 645113130 is about 864.0627713954.

Adding to 645113130 its reverse (31311546), we get a palindrome (676424676).

The spelling of 645113130 in words is "six hundred forty-five million, one hundred thirteen thousand, one hundred thirty".