3974984818145 has 16 divisors (see below), whose sum is σ = 5383051542720. Its totient is φ = 2791211908800.

The previous prime is 3974984818127. The next prime is 3974984818163. The reversal of 3974984818145 is 5418184894793.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3974984818127) and next prime (3974984818163).

It is not a de Polignac number, because 3974984818145 - 2⁶ = 3974984818081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1246075151 + ... + 1246078340.

It is an arithmetic number, because the mean of its divisors is an integer number (336440721420).

Almost surely, 2^{3974984818145} is an apocalyptic number.

It is an amenable number.

3974984818145 is a deficient number, since it is larger than the sum of its proper divisors (1408066724575).

3974984818145 is a wasteful number, since it uses less digits than its factorization.

3974984818145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492153536.

The product of its digits is 278691840, while the sum is 71.

The spelling of 3974984818145 in words is "three trillion, nine hundred seventy-four billion, nine hundred eighty-four million, eight hundred eighteen thousand, one hundred forty-five".