1645952 has 64 divisors (see below), whose sum is σ = 4112640. Its totient is φ = 637440.

The previous prime is 1645939. The next prime is 1645961. The reversal of 1645952 is 2595461.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 9773 + ... + 9939.

It is an arithmetic number, because the mean of its divisors is an integer number (64260).

2^1645952 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 1645952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2056320).

1645952 is an abundant number, since it is smaller than the sum of its proper divisors (2466688).

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

1645952 is a wasteful number, since it uses less digits than its factorization.

1645952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 187 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 1645952 is about 1282.9466083980. The cubic root of 1645952 is about 118.0698619146.

It can be divided in two parts, 164 and 5952, that added together give a palindrome (6116).

The spelling of 1645952 in words is "one million, six hundred forty-five thousand, nine hundred fifty-two".