1945857973612 has 48 divisors (see below), whose sum is σ = 4021966262272. Its totient is φ = 806091445440.

The previous prime is 1945857973589. The next prime is 1945857973681. The reversal of 1945857973612 is 2163797585491.

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, 573648 + ... + 2054455.

Almost surely, 2^{1945857973612} is an apocalyptic number.

It is an amenable number.

1945857973612 is an abundant number, since it is smaller than the sum of its proper divisors (2076108288660).

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

1945857973612 is a wasteful number, since it uses less digits than its factorization.

1945857973612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628998 (or 2628996 counting only the distinct ones).

The product of its digits is 114307200, while the sum is 67.

The spelling of 1945857973612 in words is "one trillion, nine hundred forty-five billion, eight hundred fifty-seven million, nine hundred seventy-three thousand, six hundred twelve".