1954039636928 has 56 divisors (see below), whose sum is σ = 3961956820800. Its totient is φ = 955771342848.

The previous prime is 1954039636921. The next prime is 1954039637021. The reversal of 1954039636928 is 8296369304591.

It is a super-2 number, since 2×1954039636928² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954039636921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6128228 + ... + 6439196.

Almost surely, 2^{1954039636928} 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 1954039636928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1980978410400).

1954039636928 is an abundant number, since it is smaller than the sum of its proper divisors (2007917183872).

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

1954039636928 is a wasteful number, since it uses less digits than its factorization.

1954039636928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313117 (or 313107 counting only the distinct ones).

The product of its (nonzero) digits is 75582720, while the sum is 65.

The spelling of 1954039636928 in words is "one trillion, nine hundred fifty-four billion, thirty-nine million, six hundred thirty-six thousand, nine hundred twenty-eight".