1030138388 has 12 divisors (see below), whose sum is σ = 1809598560. Its totient is φ = 513110232.

The previous prime is 1030138381. The next prime is 1030138391. The reversal of 1030138388 is 8838310301.

1030138388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1030138388² = 2122370196862477088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030138381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488558 + ... + 490661.

It is an arithmetic number, because the mean of its divisors is an integer number (150799880).

Almost surely, 2^1030138388 is an apocalyptic number.

It is an amenable number.

1030138388 is a deficient number, since it is larger than the sum of its proper divisors (779460172).

1030138388 is a wasteful number, since it uses less digits than its factorization.

1030138388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979486 (or 979484 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1030138388 is about 32095.7690046523. The cubic root of 1030138388 is about 1009.9468612372.

Adding to 1030138388 its reverse (8838310301), we get a palindrome (9868448689).

The spelling of 1030138388 in words is "one billion, thirty million, one hundred thirty-eight thousand, three hundred eighty-eight".