3981520514730 has 64 divisors (see below), whose sum is σ = 10427333700096. Its totient is φ = 964940328000.

The previous prime is 3981520514723. The next prime is 3981520514753. The reversal of 3981520514730 is 374150251893.

It is a self number, because there is not a number n which added to its sum of digits gives 3981520514730.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 576016 + ... + 2880075.

It is an arithmetic number, because the mean of its divisors is an integer number (162927089064).

Almost surely, 2^{3981520514730} is an apocalyptic number.

3981520514730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3981520514730 is an abundant number, since it is smaller than the sum of its proper divisors (6445813185366).

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

3981520514730 is a wasteful number, since it uses less digits than its factorization.

3981520514730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459603.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 3981520514730 in words is "three trillion, nine hundred eighty-one billion, five hundred twenty million, five hundred fourteen thousand, seven hundred thirty".