1646406522 has 96 divisors (see below), whose sum is σ = 3770178048. Its totient is φ = 518738688.

The previous prime is 1646406521. The next prime is 1646406527. The reversal of 1646406522 is 2256046461.

1646406522 is a `hidden beast` number, since 1 + 6 + 4 + 640 + 6 + 5 + 2 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1646406521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3272923 + ... + 3273425.

It is an arithmetic number, because the mean of its divisors is an integer number (39272688).

Almost surely, 2^1646406522 is an apocalyptic number.

1646406522 is an abundant number, since it is smaller than the sum of its proper divisors (2123771526).

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

1646406522 is a wasteful number, since it uses less digits than its factorization.

1646406522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 1646406522 is about 40575.9352572433. The cubic root of 1646406522 is about 1180.8072906233.

The spelling of 1646406522 in words is "one billion, six hundred forty-six million, four hundred six thousand, five hundred twenty-two".