3958237661 has 8 divisors (see below), whose sum is σ = 4525392960. Its totient is φ = 3391505568.

The previous prime is 3958237651. The next prime is 3958237691. The reversal of 3958237661 is 1667328593.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3958237661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3958237651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85496 + ... + 123393.

It is an arithmetic number, because the mean of its divisors is an integer number (565674120).

Almost surely, 2^3958237661 is an apocalyptic number.

It is an amenable number.

3958237661 is a deficient number, since it is larger than the sum of its proper divisors (567155299).

3958237661 is a wasteful number, since it uses less digits than its factorization.

3958237661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211603.

The product of its digits is 1632960, while the sum is 50.

The square root of 3958237661 is about 62914.5266293882. The cubic root of 3958237661 is about 1581.8572483807.

The spelling of 3958237661 in words is "three billion, nine hundred fifty-eight million, two hundred thirty-seven thousand, six hundred sixty-one".