1385532500 has 60 divisors (see below), whose sum is σ = 3305391936. Its totient is φ = 503820000.

The previous prime is 1385532479. The next prime is 1385532563. The reversal of 1385532500 is 52355831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2309 + ... + 52691.

Almost surely, 2^1385532500 is an apocalyptic number.

1385532500 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 1385532500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652695968).

1385532500 is an abundant number, since it is smaller than the sum of its proper divisors (1919859436).

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

1385532500 is a wasteful number, since it uses less digits than its factorization.

1385532500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50418 (or 50401 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 1385532500 is about 37222.7417045010. The cubic root of 1385532500 is about 1114.8221075967.

The spelling of 1385532500 in words is "one billion, three hundred eighty-five million, five hundred thirty-two thousand, five hundred".