1655121332 has 12 divisors (see below), whose sum is σ = 2904764100. Its totient is φ = 825188736.

The previous prime is 1655121329. The next prime is 1655121371. The reversal of 1655121332 is 2331215561.

It can be written as a sum of positive squares in 2 ways, for example, as 742235536 + 912885796 = 27244^2 + 30214^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1655121295 and 1655121304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591413 + ... + 594204.

It is an arithmetic number, because the mean of its divisors is an integer number (242063675).

Almost surely, 2^1655121332 is an apocalyptic number.

It is an amenable number.

1655121332 is a deficient number, since it is larger than the sum of its proper divisors (1249642768).

1655121332 is a wasteful number, since it uses less digits than its factorization.

1655121332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185970 (or 1185968 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 1655121332 is about 40683.1824222245. The cubic root of 1655121332 is about 1182.8870539479.

Adding to 1655121332 its reverse (2331215561), we get a palindrome (3986336893).

The spelling of 1655121332 in words is "one billion, six hundred fifty-five million, one hundred twenty-one thousand, three hundred thirty-two".