380128970116 has 81 divisors (see below), whose sum is σ = 791493546501. Its totient is φ = 159276027456.

The previous prime is 380128970099. The next prime is 380128970141. The reversal of 380128970116 is 611079821083.

It is a happy number.

The square root of 380128970116 is 616546.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20013760900 + 360115209216 = 141470^2 + 600096^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 405686800 + ... + 405687736.

Almost surely, 2^380128970116 is an apocalyptic number.

380128970116 is the 616546-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 380128970116

380128970116 is an abundant number, since it is smaller than the sum of its proper divisors (411364576385).

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

380128970116 is an frugal number, since it uses more digits than its factorization.

380128970116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

It can be divided in two parts, 380128 and 970116, that added together give a square (1350244 = 1162²).

The spelling of 380128970116 in words is "three hundred eighty billion, one hundred twenty-eight million, nine hundred seventy thousand, one hundred sixteen".