3981543151 has 4 divisors (see below), whose sum is σ = 4036084912. Its totient is φ = 3927001392.

The previous prime is 3981543109. The next prime is 3981543173. The reversal of 3981543151 is 1513451893.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3981543151 - 2⁹ = 3981542639 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 (3981543451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27270771 + ... + 27270916.

It is an arithmetic number, because the mean of its divisors is an integer number (1009021228).

Almost surely, 2^3981543151 is an apocalyptic number.

3981543151 is a deficient number, since it is larger than the sum of its proper divisors (54541761).

3981543151 is an equidigital number, since it uses as much as digits as its factorization.

3981543151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54541760.

The product of its digits is 64800, while the sum is 40.

The square root of 3981543151 is about 63099.4702909620. The cubic root of 3981543151 is about 1584.9557519318.

The spelling of 3981543151 in words is "three billion, nine hundred eighty-one million, five hundred forty-three thousand, one hundred fifty-one".