1320369438 has 32 divisors (see below), whose sum is σ = 2718815616. Its totient is φ = 427236768.

The previous prime is 1320369433. The next prime is 1320369503. The reversal of 1320369438 is 8349630231.

It is a junction number, because it is equal to n+sod(n) for n = 1320369396 and 1320369405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320369433) 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, 26356 + ... + 57752.

It is an arithmetic number, because the mean of its divisors is an integer number (84962988).

Almost surely, 2^1320369438 is an apocalyptic number.

1320369438 is an abundant number, since it is smaller than the sum of its proper divisors (1398446178).

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

1320369438 is a wasteful number, since it uses less digits than its factorization.

1320369438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31608.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 1320369438 is about 36336.8881166233. Note that the first 3 decimals coincide. The cubic root of 1320369438 is about 1097.0636391206.

Adding to 1320369438 its reverse (8349630231), we get a palindrome (9669999669).

The spelling of 1320369438 in words is "one billion, three hundred twenty million, three hundred sixty-nine thousand, four hundred thirty-eight".