43619993316 has 135 divisors (see below), whose sum is σ = 117294829113. Its totient is φ = 14135238720.

The previous prime is 43619993297. The next prime is 43619993353. The reversal of 43619993316 is 61339991634.

The square root of 43619993316 is 208854.

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

43619993316 is a `hidden beast` number, since 4 + 3 + 619 + 9 + 9 + 3 + 3 + 16 = 666.

43619993316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2101855716 + 41518137600 = 45846^2 + 203760^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 154134111 + ... + 154134393.

Almost surely, 2^43619993316 is an apocalyptic number.

43619993316 is the 208854-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43619993316

43619993316 is an abundant number, since it is smaller than the sum of its proper divisors (73674835797).

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

43619993316 is an equidigital number, since it uses as much as digits as its factorization.

43619993316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 329 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 54.

The spelling of 43619993316 in words is "forty-three billion, six hundred nineteen million, nine hundred ninety-three thousand, three hundred sixteen".