1038740388 has 72 divisors (see below), whose sum is σ = 2793696192. Its totient is φ = 294261888.

The previous prime is 1038740383. The next prime is 1038740389. The reversal of 1038740388 is 8830478301.

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

It is not an unprimeable number, because it can be changed into a prime (1038740383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1864606 + ... + 1865162.

It is an arithmetic number, because the mean of its divisors is an integer number (38801336).

Almost surely, 2^1038740388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1038740388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1396848096).

1038740388 is an abundant number, since it is smaller than the sum of its proper divisors (1754955804).

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

1038740388 is a wasteful number, since it uses less digits than its factorization.

1038740388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1038740388 is about 32229.4956212473. The cubic root of 1038740388 is about 1012.7502040398.

The spelling of 1038740388 in words is "one billion, thirty-eight million, seven hundred forty thousand, three hundred eighty-eight".