38434139380 has 96 divisors (see below), whose sum is σ = 100698603264. Its totient is φ = 11997103104.

The previous prime is 38434139371. The next prime is 38434139383. The reversal of 38434139380 is 8393143483.

It is a self number, because there is not a number n which added to its sum of digits gives 38434139380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38434139383) 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, 11782 + ... + 277501.

It is an arithmetic number, because the mean of its divisors is an integer number (1048943784).

Almost surely, 2^38434139380 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 38434139380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50349301632).

38434139380 is an abundant number, since it is smaller than the sum of its proper divisors (62264463884).

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

38434139380 is a wasteful number, since it uses less digits than its factorization.

38434139380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289385 (or 289383 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 38434139380 in words is "thirty-eight billion, four hundred thirty-four million, one hundred thirty-nine thousand, three hundred eighty".