1382631320 has 64 divisors (see below), whose sum is σ = 3570765120. Its totient is φ = 471988224.

The previous prime is 1382631253. The next prime is 1382631323. The reversal of 1382631320 is 231362831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1382631323) 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, 54644 + ... + 75836.

It is an arithmetic number, because the mean of its divisors is an integer number (55793205).

Almost surely, 2^1382631320 is an apocalyptic number.

1382631320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1382631320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1785382560).

1382631320 is an abundant number, since it is smaller than the sum of its proper divisors (2188133800).

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

1382631320 is a wasteful number, since it uses less digits than its factorization.

1382631320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21444 (or 21440 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1382631320 is about 37183.7507521767. The cubic root of 1382631320 is about 1114.0434515744.

The spelling of 1382631320 in words is "one billion, three hundred eighty-two million, six hundred thirty-one thousand, three hundred twenty".