3981395738160 has 60 divisors (see below), whose sum is σ = 13370854023072. Its totient is φ = 1061705529984.

The previous prime is 3981395738141. The next prime is 3981395738179. The reversal of 3981395738160 is 618375931893.

3981395738160 is a `hidden beast` number, since 3 + 9 + 81 + 395 + 7 + 3 + 8 + 160 = 666.

It is an interprime number because it is at equal distance from previous prime (3981395738141) and next prime (3981395738179).

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-3 number, since 3×3981395738160³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2764857432 + ... + 2764858871.

Almost surely, 2^{3981395738160} is an apocalyptic number.

3981395738160 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3981395738160 is an abundant number, since it is smaller than the sum of its proper divisors (9389458284912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3981395738160 is a wasteful number, since it uses less digits than its factorization.

3981395738160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5529716322 (or 5529716313 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 3981395738160 in words is "three trillion, nine hundred eighty-one billion, three hundred ninety-five million, seven hundred thirty-eight thousand, one hundred sixty".