1345639332 has 12 divisors (see below), whose sum is σ = 3139825136. Its totient is φ = 448546440.

The previous prime is 1345639331. The next prime is 1345639333. The reversal of 1345639332 is 2339365431.

It is an interprime number because it is at equal distance from previous prime (1345639331) and next prime (1345639333).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1345639331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56068294 + ... + 56068317.

Almost surely, 2^1345639332 is an apocalyptic number.

1345639332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1345639332 is an abundant number, since it is smaller than the sum of its proper divisors (1794185804).

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

1345639332 is a wasteful number, since it uses less digits than its factorization.

1345639332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112136618 (or 112136616 counting only the distinct ones).

The product of its digits is 174960, while the sum is 39.

The square root of 1345639332 is about 36682.9569691430. The cubic root of 1345639332 is about 1104.0181779983.

The spelling of 1345639332 in words is "one billion, three hundred forty-five million, six hundred thirty-nine thousand, three hundred thirty-two".