2091518895934 has 16 divisors (see below), whose sum is σ = 3442354759872. Its totient is φ = 947102895648.

The previous prime is 2091518895923. The next prime is 2091518895971. The reversal of 2091518895934 is 4395988151902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758895174 + ... + 758897929.

It is an arithmetic number, because the mean of its divisors is an integer number (215147172492).

Almost surely, 2^{2091518895934} is an apocalyptic number.

2091518895934 is a deficient number, since it is larger than the sum of its proper divisors (1350835863938).

2091518895934 is a wasteful number, since it uses less digits than its factorization.

2091518895934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517793171.

The product of its (nonzero) digits is 27993600, while the sum is 64.

The spelling of 2091518895934 in words is "two trillion, ninety-one billion, five hundred eighteen million, eight hundred ninety-five thousand, nine hundred thirty-four".