645151130 has 32 divisors (see below), whose sum is σ = 1266451200. Its totient is φ = 235190592.

The previous prime is 645151123. The next prime is 645151141. The reversal of 645151130 is 31151546.

645151130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 645151130.

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, 21140 + ... + 41679.

It is an arithmetic number, because the mean of its divisors is an integer number (39576600).

Almost surely, 2^645151130 is an apocalyptic number.

645151130 is a deficient number, since it is larger than the sum of its proper divisors (621300070).

645151130 is a wasteful number, since it uses less digits than its factorization.

645151130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62918.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 645151130 is about 25399.8253931006. The cubic root of 645151130 is about 864.0797367611.

The spelling of 645151130 in words is "six hundred forty-five million, one hundred fifty-one thousand, one hundred thirty".