1321606938 has 32 divisors (see below), whose sum is σ = 2663829504. Its totient is φ = 437109872.

The previous prime is 1321606931. The next prime is 1321606943. The reversal of 1321606938 is 8396061231.

1321606938 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1321606896 and 1321606905.

It is not an unprimeable number, because it can be changed into a prime (1321606931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 888031 + ... + 889517.

It is an arithmetic number, because the mean of its divisors is an integer number (83244672).

Almost surely, 2^1321606938 is an apocalyptic number.

1321606938 is an abundant number, since it is smaller than the sum of its proper divisors (1342222566).

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

1321606938 is a wasteful number, since it uses less digits than its factorization.

1321606938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2546.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1321606938 is about 36353.9122791482. The cubic root of 1321606938 is about 1097.4062685642.

The spelling of 1321606938 in words is "one billion, three hundred twenty-one million, six hundred six thousand, nine hundred thirty-eight".