1238813500 has 48 divisors (see below), whose sum is σ = 2713052160. Its totient is φ = 494155200.

The previous prime is 1238813497. The next prime is 1238813519. The reversal of 1238813500 is 53188321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188266 + ... + 194734.

It is an arithmetic number, because the mean of its divisors is an integer number (56521920).

Almost surely, 2^1238813500 is an apocalyptic number.

1238813500 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 1238813500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1356526080).

1238813500 is an abundant number, since it is smaller than the sum of its proper divisors (1474238660).

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

1238813500 is a wasteful number, since it uses less digits than its factorization.

1238813500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6871 (or 6859 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1238813500 is about 35196.7825234069. The cubic root of 1238813500 is about 1073.9943000968.

The spelling of 1238813500 in words is "one billion, two hundred thirty-eight million, eight hundred thirteen thousand, five hundred".