1322632138 has 8 divisors (see below), whose sum is σ = 1984120740. Its totient is φ = 661258560.

The previous prime is 1322632109. The next prime is 1322632139. The reversal of 1322632138 is 8312362231.

It can be written as a sum of positive squares in 2 ways, for example, as 1274704209 + 47927929 = 35703^2 + 6923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1322632139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10968 + ... + 52588.

Almost surely, 2^1322632138 is an apocalyptic number.

1322632138 is a deficient number, since it is larger than the sum of its proper divisors (661488602).

1322632138 is a wasteful number, since it uses less digits than its factorization.

1322632138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57512.

The product of its digits is 10368, while the sum is 31.

The square root of 1322632138 is about 36368.0098163207. The cubic root of 1322632138 is about 1097.6899560681.

Adding to 1322632138 its reverse (8312362231), we get a palindrome (9634994369).

The spelling of 1322632138 in words is "one billion, three hundred twenty-two million, six hundred thirty-two thousand, one hundred thirty-eight".