15381038442 has 64 divisors (see below), whose sum is σ = 38474072064. Its totient is φ = 3982434240.

The previous prime is 15381038429. The next prime is 15381038443. The reversal of 15381038442 is 24483018351.

It is a self number, because there is not a number n which added to its sum of digits gives 15381038442.

It is not an unprimeable number, because it can be changed into a prime (15381038443) 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, 93943 + ... + 198965.

It is an arithmetic number, because the mean of its divisors is an integer number (601157376).

Almost surely, 2^15381038442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15381038442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19237036032).

15381038442 is an abundant number, since it is smaller than the sum of its proper divisors (23093033622).

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

15381038442 is a wasteful number, since it uses less digits than its factorization.

15381038442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105363.

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 15381038442 in words is "fifteen billion, three hundred eighty-one million, thirty-eight thousand, four hundred forty-two".