1380458838 has 16 divisors (see below), whose sum is σ = 3011910336. Its totient is φ = 418320840.

The previous prime is 1380458831. The next prime is 1380458867. The reversal of 1380458838 is 8388540831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380458831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10457956 + ... + 10458087.

It is an arithmetic number, because the mean of its divisors is an integer number (188244396).

Almost surely, 2^1380458838 is an apocalyptic number.

1380458838 is an abundant number, since it is smaller than the sum of its proper divisors (1631451498).

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

1380458838 is a wasteful number, since it uses less digits than its factorization.

1380458838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20916059.

The product of its (nonzero) digits is 737280, while the sum is 48.

The square root of 1380458838 is about 37154.5264806322. The cubic root of 1380458838 is about 1113.4596593921.

The spelling of 1380458838 in words is "one billion, three hundred eighty million, four hundred fifty-eight thousand, eight hundred thirty-eight".