1933541978488 has 8 divisors (see below), whose sum is σ = 3625391209680. Its totient is φ = 966770989240.

The previous prime is 1933541978447. The next prime is 1933541978509. The reversal of 1933541978488 is 8848791453391.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1933541978488² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120846373648 + ... + 120846373663.

It is an arithmetic number, because the mean of its divisors is an integer number (453173901210).

Almost surely, 2^{1933541978488} is an apocalyptic number.

It is an amenable number.

1933541978488 is a deficient number, since it is larger than the sum of its proper divisors (1691849231192).

1933541978488 is a wasteful number, since it uses less digits than its factorization.

1933541978488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241692747317 (or 241692747313 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 70.

The spelling of 1933541978488 in words is "one trillion, nine hundred thirty-three billion, five hundred forty-one million, nine hundred seventy-eight thousand, four hundred eighty-eight".