1691934250884 has 12 divisors (see below), whose sum is σ = 3947846585424. Its totient is φ = 563978083624.

The previous prime is 1691934250847. The next prime is 1691934250961. The reversal of 1691934250884 is 4880524391961.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70497260442 + ... + 70497260465.

It is an arithmetic number, because the mean of its divisors is an integer number (328987215452).

Almost surely, 2^{1691934250884} is an apocalyptic number.

It is an amenable number.

1691934250884 is an abundant number, since it is smaller than the sum of its proper divisors (2255912334540).

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

1691934250884 is a wasteful number, since it uses less digits than its factorization.

1691934250884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140994520914 (or 140994520912 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 60.

The spelling of 1691934250884 in words is "one trillion, six hundred ninety-one billion, nine hundred thirty-four million, two hundred fifty thousand, eight hundred eighty-four".