1331612632 has 24 divisors (see below), whose sum is σ = 2904411060. Its totient is φ = 570690960.

The previous prime is 1331612627. The next prime is 1331612687. The reversal of 1331612632 is 2362161331.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1331612632.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1698094 + ... + 1698877.

Almost surely, 2^1331612632 is an apocalyptic number.

It is an amenable number.

1331612632 is an abundant number, since it is smaller than the sum of its proper divisors (1572798428).

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

1331612632 is a wasteful number, since it uses less digits than its factorization.

1331612632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396991 (or 3396980 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 1331612632 is about 36491.2678869891. The cubic root of 1331612632 is about 1100.1687432590.

Adding to 1331612632 its reverse (2362161331), we get a palindrome (3693773963).

The spelling of 1331612632 in words is "one billion, three hundred thirty-one million, six hundred twelve thousand, six hundred thirty-two".