1941993616540 has 48 divisors (see below), whose sum is σ = 4325289192000. Its totient is φ = 729882862592.

The previous prime is 1941993616487. The next prime is 1941993616573. The reversal of 1941993616540 is 456163991491.

It is a congruent number.

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, 4564075 + ... + 4971394.

It is an arithmetic number, because the mean of its divisors is an integer number (90110191500).

Almost surely, 2^{1941993616540} is an apocalyptic number.

1941993616540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1941993616540 is an abundant number, since it is smaller than the sum of its proper divisors (2383295575460).

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

1941993616540 is a wasteful number, since it uses less digits than its factorization.

1941993616540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9536094 (or 9536092 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 58.

The spelling of 1941993616540 in words is "one trillion, nine hundred forty-one billion, nine hundred ninety-three million, six hundred sixteen thousand, five hundred forty".