6139981641 has 8 divisors (see below), whose sum is σ = 8187108160. Its totient is φ = 4093088112.

The previous prime is 6139981633. The next prime is 6139981649. The reversal of 6139981641 is 1461899316.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6139981633) and next prime (6139981649).

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

It is not a de Polignac number, because 6139981641 - 2³ = 6139981633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6139981649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17211 + ... + 112143.

It is an arithmetic number, because the mean of its divisors is an integer number (1023388520).

Almost surely, 2^6139981641 is an apocalyptic number.

It is an amenable number.

6139981641 is a deficient number, since it is larger than the sum of its proper divisors (2047126519).

6139981641 is a wasteful number, since it uses less digits than its factorization.

6139981641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116495.

The product of its digits is 279936, while the sum is 48.

The square root of 6139981641 is about 78358.0349485616. The cubic root of 6139981641 is about 1831.1434064915.

The spelling of 6139981641 in words is "six billion, one hundred thirty-nine million, nine hundred eighty-one thousand, six hundred forty-one".