3981259137 has 4 divisors (see below), whose sum is σ = 5308345520. Its totient is φ = 2654172756.

The previous prime is 3981259111. The next prime is 3981259147. The reversal of 3981259137 is 7319521893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3981259137 - 2²³ = 3972870529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3981259147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663543187 + ... + 663543192.

It is an arithmetic number, because the mean of its divisors is an integer number (1327086380).

Almost surely, 2^3981259137 is an apocalyptic number.

It is an amenable number.

3981259137 is a deficient number, since it is larger than the sum of its proper divisors (1327086383).

3981259137 is a wasteful number, since it uses less digits than its factorization.

3981259137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327086382.

The product of its digits is 408240, while the sum is 48.

The square root of 3981259137 is about 63097.2197248025. The cubic root of 3981259137 is about 1584.9180646742.

The spelling of 3981259137 in words is "three billion, nine hundred eighty-one million, two hundred fifty-nine thousand, one hundred thirty-seven".