1921340846523 has 16 divisors (see below), whose sum is σ = 2928842323200. Its totient is φ = 1097502239136.

The previous prime is 1921340846461. The next prime is 1921340846527. The reversal of 1921340846523 is 3256480431291.

It is not a de Polignac number, because 1921340846523 - 2¹⁶ = 1921340780987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1921340846527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16892640 + ... + 17005997.

It is an arithmetic number, because the mean of its divisors is an integer number (183052645200).

Almost surely, 2^{1921340846523} is an apocalyptic number.

1921340846523 is a deficient number, since it is larger than the sum of its proper divisors (1007501476677).

1921340846523 is a wasteful number, since it uses less digits than its factorization.

1921340846523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33901346.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 1921340846523 in words is "one trillion, nine hundred twenty-one billion, three hundred forty million, eight hundred forty-six thousand, five hundred twenty-three".