1328850437 has 4 divisors (see below), whose sum is σ = 1329067116. Its totient is φ = 1328633760.

The previous prime is 1328850431. The next prime is 1328850517. The reversal of 1328850437 is 7340588231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7340588231 = 19 ⋅386346749.

It can be written as a sum of positive squares in 2 ways, for example, as 871489441 + 457360996 = 29521^2 + 21386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1328850437 - 2⁸ = 1328850181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1328850394 and 1328850403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328850431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98864 + ... + 111497.

It is an arithmetic number, because the mean of its divisors is an integer number (332266779).

Almost surely, 2^1328850437 is an apocalyptic number.

It is an amenable number.

1328850437 is a deficient number, since it is larger than the sum of its proper divisors (216679).

1328850437 is an equidigital number, since it uses as much as digits as its factorization.

1328850437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216678.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 1328850437 is about 36453.4008975843. The cubic root of 1328850437 is about 1099.4075148155.

The spelling of 1328850437 in words is "one billion, three hundred twenty-eight million, eight hundred fifty thousand, four hundred thirty-seven".