1038735438 has 64 divisors (see below), whose sum is σ = 2319528960. Its totient is φ = 308068992.

The previous prime is 1038735431. The next prime is 1038735443. The reversal of 1038735438 is 8345378301.

It is a self number, because there is not a number n which added to its sum of digits gives 1038735438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1038735431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243508 + ... + 247736.

It is an arithmetic number, because the mean of its divisors is an integer number (36242640).

Almost surely, 2^1038735438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1038735438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1159764480).

1038735438 is an abundant number, since it is smaller than the sum of its proper divisors (1280793522).

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

1038735438 is a wasteful number, since it uses less digits than its factorization.

1038735438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4361.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 1038735438 is about 32229.4188281452. The cubic root of 1038735438 is about 1012.7485953217.

The spelling of 1038735438 in words is "one billion, thirty-eight million, seven hundred thirty-five thousand, four hundred thirty-eight".