1605090032 has 40 divisors (see below), whose sum is σ = 3827525856. Its totient is φ = 634980096.

The previous prime is 1605090013. The next prime is 1605090043. The reversal of 1605090032 is 2300905061.

It is a super-2 number, since 2×1605090032² = 5152628021651522048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 1605089983 and 1605090010.

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, 549743 + ... + 552654.

Almost surely, 2^1605090032 is an apocalyptic number.

It is an amenable number.

1605090032 is an abundant number, since it is smaller than the sum of its proper divisors (2222435824).

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

1605090032 is a wasteful number, since it uses less digits than its factorization.

1605090032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102425 (or 1102419 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1605090032 is about 40063.5748779362. The cubic root of 1605090032 is about 1170.8460610390.

Adding to 1605090032 its reverse (2300905061), we get a palindrome (3905995093).

The spelling of 1605090032 in words is "one billion, six hundred five million, ninety thousand, thirty-two".