1913410944550 has 72 divisors (see below), whose sum is σ = 4146263238240. Its totient is φ = 655033579200.

The previous prime is 1913410944539. The next prime is 1913410944559. The reversal of 1913410944550 is 554490143191.

It is a super-2 number, since 2×1913410944550² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1913410944550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913410944559) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1028691 + ... + 2210209.

It is an arithmetic number, because the mean of its divisors is an integer number (57586989420).

Almost surely, 2^{1913410944550} is an apocalyptic number.

1913410944550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1913410944550 is an abundant number, since it is smaller than the sum of its proper divisors (2232852293690).

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

1913410944550 is a wasteful number, since it uses less digits than its factorization.

1913410944550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182206 (or 1182194 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 1913410944550 in words is "one trillion, nine hundred thirteen billion, four hundred ten million, nine hundred forty-four thousand, five hundred fifty".