1626217852 has 48 divisors (see below), whose sum is σ = 3408975360. Its totient is φ = 663676992.

The previous prime is 1626217837. The next prime is 1626217877. The reversal of 1626217852 is 2587126261.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141963 + ... + 152989.

It is an arithmetic number, because the mean of its divisors is an integer number (71020320).

Almost surely, 2^1626217852 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1626217852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1704487680).

1626217852 is an abundant number, since it is smaller than the sum of its proper divisors (1782757508).

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

1626217852 is a wasteful number, since it uses less digits than its factorization.

1626217852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11290 (or 11288 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 1626217852 is about 40326.3915072995. The cubic root of 1626217852 is about 1175.9609707920.

The spelling of 1626217852 in words is "one billion, six hundred twenty-six million, two hundred seventeen thousand, eight hundred fifty-two".