163890343374 has 64 divisors (see below), whose sum is σ = 346361702400. Its totient is φ = 51555820032.

The previous prime is 163890343363. The next prime is 163890343391. The reversal of 163890343374 is 473343098361.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40236202 + ... + 40240274.

It is an arithmetic number, because the mean of its divisors is an integer number (5411901600).

Almost surely, 2^163890343374 is an apocalyptic number.

163890343374 is an abundant number, since it is smaller than the sum of its proper divisors (182471359026).

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

163890343374 is a wasteful number, since it uses less digits than its factorization.

163890343374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369.

The product of its (nonzero) digits is 3919104, while the sum is 51.

The spelling of 163890343374 in words is "one hundred sixty-three billion, eight hundred ninety million, three hundred forty-three thousand, three hundred seventy-four".