3961628111 has 4 divisors (see below), whose sum is σ = 4527574992. Its totient is φ = 3395681232.

The previous prime is 3961628107. The next prime is 3961628137. The reversal of 3961628111 is 1118261693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1118261693 = 37 ⋅30223289.

It is a cyclic number.

It is not a de Polignac number, because 3961628111 - 2² = 3961628107 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 (3961628311) 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 3 ways as a sum of consecutive naturals, for example, 282973430 + ... + 282973443.

It is an arithmetic number, because the mean of its divisors is an integer number (1131893748).

Almost surely, 2^3961628111 is an apocalyptic number.

3961628111 is a deficient number, since it is larger than the sum of its proper divisors (565946881).

3961628111 is an equidigital number, since it uses as much as digits as its factorization.

3961628111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565946880.

The product of its digits is 15552, while the sum is 38.

The square root of 3961628111 is about 62941.4657519191. The cubic root of 3961628111 is about 1582.3087689647.

The spelling of 3961628111 in words is "three billion, nine hundred sixty-one million, six hundred twenty-eight thousand, one hundred eleven".