1646164252 has 12 divisors (see below), whose sum is σ = 2921362416. Its totient is φ = 811489280.

The previous prime is 1646164249. The next prime is 1646164253. The reversal of 1646164252 is 2524616461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1646164253) 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, 2897893 + ... + 2898460.

It is an arithmetic number, because the mean of its divisors is an integer number (243446868).

Almost surely, 2^1646164252 is an apocalyptic number.

It is an amenable number.

1646164252 is a deficient number, since it is larger than the sum of its proper divisors (1275198164).

1646164252 is a wasteful number, since it uses less digits than its factorization.

1646164252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5796428 (or 5796426 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 1646164252 is about 40572.9497571966. The cubic root of 1646164252 is about 1180.7493688784.

The spelling of 1646164252 in words is "one billion, six hundred forty-six million, one hundred sixty-four thousand, two hundred fifty-two".