3981530587170 has 64 divisors (see below), whose sum is σ = 10072142484480. Its totient is φ = 1004506469568.

The previous prime is 3981530587169. The next prime is 3981530587171. The reversal of 3981530587170 is 717850351893.

It is an interprime number because it is at equal distance from previous prime (3981530587169) and next prime (3981530587171).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 3981530587170.

It is not an unprimeable number, because it can be changed into a prime (3981530587171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4277124 + ... + 5124143.

It is an arithmetic number, because the mean of its divisors is an integer number (157377226320).

Almost surely, 2^{3981530587170} is an apocalyptic number.

3981530587170 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3981530587170 is an abundant number, since it is smaller than the sum of its proper divisors (6090611897310).

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

3981530587170 is a wasteful number, since it uses less digits than its factorization.

3981530587170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9402039.

The product of its (nonzero) digits is 6350400, while the sum is 57.

The spelling of 3981530587170 in words is "three trillion, nine hundred eighty-one billion, five hundred thirty million, five hundred eighty-seven thousand, one hundred seventy".