1382531388 has 24 divisors (see below), whose sum is σ = 3686750592. Its totient is φ = 395008944.

The previous prime is 1382531351. The next prime is 1382531401. The reversal of 1382531388 is 8831352831.

It is a super-2 number, since 2×1382531388² = 3822786077610413088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8229270 + ... + 8229437.

It is an arithmetic number, because the mean of its divisors is an integer number (153614608).

Almost surely, 2^1382531388 is an apocalyptic number.

It is an amenable number.

1382531388 is an abundant number, since it is smaller than the sum of its proper divisors (2304219204).

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

1382531388 is a wasteful number, since it uses less digits than its factorization.

1382531388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16458721 (or 16458719 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 1382531388 is about 37182.4069688879. The cubic root of 1382531388 is about 1114.0166111408.

The spelling of 1382531388 in words is "one billion, three hundred eighty-two million, five hundred thirty-one thousand, three hundred eighty-eight".