1913317042890 has 128 divisors (see below), whose sum is σ = 5021696010240. Its totient is φ = 462698438400.

The previous prime is 1913317042801. The next prime is 1913317042921. The reversal of 1913317042890 is 982407133191.

It is a super-2 number, since 2×1913317042890² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 274622187 + ... + 274629153.

It is an arithmetic number, because the mean of its divisors is an integer number (39232000080).

Almost surely, 2^{1913317042890} is an apocalyptic number.

1913317042890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1913317042890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2510848005120).

1913317042890 is an abundant number, since it is smaller than the sum of its proper divisors (3108378967350).

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

1913317042890 is a wasteful number, since it uses less digits than its factorization.

1913317042890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8908.

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 1913317042890 in words is "one trillion, nine hundred thirteen billion, three hundred seventeen million, forty-two thousand, eight hundred ninety".