646125119 has 4 divisors (see below), whose sum is σ = 647660280. Its totient is φ = 644589960.

The previous prime is 646125113. The next prime is 646125163. The reversal of 646125119 is 911521646.

646125119 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646125119 is a prime.

It is a super-2 number, since 2×646125119² = 834955338805528322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646125113) 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, 766949 + ... + 767790.

It is an arithmetic number, because the mean of its divisors is an integer number (161915070).

Almost surely, 2^646125119 is an apocalyptic number.

646125119 is a deficient number, since it is larger than the sum of its proper divisors (1535161).

646125119 is a wasteful number, since it uses less digits than its factorization.

646125119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535160.

The product of its digits is 12960, while the sum is 35.

The square root of 646125119 is about 25418.9913057147. The cubic root of 646125119 is about 864.5143537830.

The spelling of 646125119 in words is "six hundred forty-six million, one hundred twenty-five thousand, one hundred nineteen".