1913939911650 has 96 divisors (see below), whose sum is σ = 5276585276928. Its totient is φ = 455926118400.

The previous prime is 1913939911633. The next prime is 1913939911657. The reversal of 1913939911650 is 561199393191.

It is not an unprimeable number, because it can be changed into a prime (1913939911657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15770319 + ... + 15891218.

It is an arithmetic number, because the mean of its divisors is an integer number (54964429968).

Almost surely, 2^{1913939911650} is an apocalyptic number.

1913939911650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1913939911650 is an abundant number, since it is smaller than the sum of its proper divisors (3362645365278).

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

1913939911650 is a wasteful number, since it uses less digits than its factorization.

1913939911650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31661596 (or 31661591 counting only the distinct ones).

The product of its (nonzero) digits is 1771470, while the sum is 57.

The spelling of 1913939911650 in words is "one trillion, nine hundred thirteen billion, nine hundred thirty-nine million, nine hundred eleven thousand, six hundred fifty".