4353961981 has 8 divisors (see below), whose sum is σ = 4426038144. Its totient is φ = 4282474560.

The previous prime is 4353961979. The next prime is 4353962003. The reversal of 4353961981 is 1891693534.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4353961981 - 2¹ = 4353961979 is a prime.

It is a super-2 number, since 2×4353961981² = 37913969863986888722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4353961961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132261 + ... + 161866.

It is an arithmetic number, because the mean of its divisors is an integer number (553254768).

Almost surely, 2^4353961981 is an apocalyptic number.

It is an amenable number.

4353961981 is a deficient number, since it is larger than the sum of its proper divisors (72076163).

4353961981 is a wasteful number, since it uses less digits than its factorization.

4353961981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294371.

The product of its digits is 699840, while the sum is 49.

The square root of 4353961981 is about 65984.5586557946. The cubic root of 4353961981 is about 1632.9073510195.

The spelling of 4353961981 in words is "four billion, three hundred fifty-three million, nine hundred sixty-one thousand, nine hundred eighty-one".