1605213632 has 112 divisors (see below), whose sum is σ = 3748308480. Its totient is φ = 674150400.

The previous prime is 1605213611. The next prime is 1605213691. The reversal of 1605213632 is 2363125061.

It is a junction number, because it is equal to n+sod(n) for n = 1605213595 and 1605213604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546953 + ... + 549879.

It is an arithmetic number, because the mean of its divisors is an integer number (33467040).

Almost surely, 2^1605213632 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 1605213632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874154240).

1605213632 is an abundant number, since it is smaller than the sum of its proper divisors (2143094848).

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

1605213632 is a wasteful number, since it uses less digits than its factorization.

1605213632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010 (or 3000 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1605213632 is about 40065.1173965583. The cubic root of 1605213632 is about 1170.8761139448.

Adding to 1605213632 its reverse (2363125061), we get a palindrome (3968338693).

The spelling of 1605213632 in words is "one billion, six hundred five million, two hundred thirteen thousand, six hundred thirty-two".