1945881376008 has 128 divisors (see below), whose sum is σ = 5139736166400. Its totient is φ = 612947865600.

The previous prime is 1945881375961. The next prime is 1945881376037. The reversal of 1945881376008 is 8006731885491.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225187368 + ... + 225196008.

It is an arithmetic number, because the mean of its divisors is an integer number (40154188800).

Almost surely, 2^{1945881376008} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1945881376008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2569868083200).

1945881376008 is an abundant number, since it is smaller than the sum of its proper divisors (3193854790392).

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

1945881376008 is a wasteful number, since it uses less digits than its factorization.

1945881376008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15763 (or 15759 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 60.

The spelling of 1945881376008 in words is "one trillion, nine hundred forty-five billion, eight hundred eighty-one million, three hundred seventy-six thousand, eight".