1383521010 has 64 divisors (see below), whose sum is σ = 3492357120. Its totient is φ = 350288640.

The previous prime is 1383520987. The next prime is 1383521011. The reversal of 1383521010 is 101253831.

It is a super-2 number, since 2×1383521010² = 3828260770222840200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1383521011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35256 + ... + 63324.

It is an arithmetic number, because the mean of its divisors is an integer number (54568080).

Almost surely, 2^1383521010 is an apocalyptic number.

1383521010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1383521010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1746178560).

1383521010 is an abundant number, since it is smaller than the sum of its proper divisors (2108836110).

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

1383521010 is a wasteful number, since it uses less digits than its factorization.

1383521010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28163.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1383521010 is about 37195.7122528928. The cubic root of 1383521010 is about 1114.2823537280.

Adding to 1383521010 its reverse (101253831), we get a palindrome (1484774841).

The spelling of 1383521010 in words is "one billion, three hundred eighty-three million, five hundred twenty-one thousand, ten".