1646140552 has 32 divisors (see below), whose sum is σ = 3528849600. Its totient is φ = 705207744.

The previous prime is 1646140523. The next prime is 1646140591. The reversal of 1646140552 is 2550416461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199974 + ... + 208042.

It is an arithmetic number, because the mean of its divisors is an integer number (110276550).

Almost surely, 2^1646140552 is an apocalyptic number.

It is an amenable number.

1646140552 is an abundant number, since it is smaller than the sum of its proper divisors (1882709048).

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

1646140552 is a wasteful number, since it uses less digits than its factorization.

1646140552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11725 (or 11721 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1646140552 is about 40572.6576896313. The cubic root of 1646140552 is about 1180.7437023936.

The spelling of 1646140552 in words is "one billion, six hundred forty-six million, one hundred forty thousand, five hundred fifty-two".