1974394837068 has 24 divisors (see below), whose sum is σ = 4607359127280. Its totient is φ = 658069063680.

The previous prime is 1974394837021. The next prime is 1974394837109. The reversal of 1974394837068 is 8607384934791.

It is a junction number, because it is equal to n+sod(n) for n = 1974394836993 and 1974394837011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7686973 + ... + 7939668.

It is an arithmetic number, because the mean of its divisors is an integer number (191973296970).

Almost surely, 2^{1974394837068} is an apocalyptic number.

It is an amenable number.

1974394837068 is an abundant number, since it is smaller than the sum of its proper divisors (2632964290212).

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

1974394837068 is a wasteful number, since it uses less digits than its factorization.

1974394837068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15637177 (or 15637175 counting only the distinct ones).

The product of its (nonzero) digits is 219469824, while the sum is 69.

The spelling of 1974394837068 in words is "one trillion, nine hundred seventy-four billion, three hundred ninety-four million, eight hundred thirty-seven thousand, sixty-eight".