3945454882740 has 240 divisors, whose sum is σ = 14182134607872. Its totient is φ = 899462651904.

The previous prime is 3945454882739. The next prime is 3945454882741. The reversal of 3945454882740 is 472884545493.

3945454882740 is a `hidden beast` number, since 3 + 9 + 4 + 5 + 4 + 548 + 82 + 7 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (3945454882739) and next prime (3945454882741).

It is a super-2 number, since 2×3945454882740² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945454882741) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3889012 + ... + 4797428.

Almost surely, 2^{3945454882740} is an apocalyptic number.

3945454882740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3945454882740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7091067303936).

3945454882740 is an abundant number, since it is smaller than the sum of its proper divisors (10236679725132).

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

3945454882740 is a wasteful number, since it uses less digits than its factorization.

3945454882740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908828 (or 908817 counting only the distinct ones).

The product of its (nonzero) digits is 154828800, while the sum is 63.

The spelling of 3945454882740 in words is "three trillion, nine hundred forty-five billion, four hundred fifty-four million, eight hundred eighty-two thousand, seven hundred forty".