1974351550161 has 8 divisors (see below), whose sum is σ = 2633970434080. Its totient is φ = 1315483516512.

The previous prime is 1974351550141. The next prime is 1974351550169. The reversal of 1974351550161 is 1610551534791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1974351550161 - 2⁶ = 1974351550097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1974351550161.

It is not an unprimeable number, because it can be changed into a prime (1974351550169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187706431 + ... + 187716948.

It is an arithmetic number, because the mean of its divisors is an integer number (329246304260).

Almost surely, 2^{1974351550161} is an apocalyptic number.

It is an amenable number.

1974351550161 is a deficient number, since it is larger than the sum of its proper divisors (659618883919).

1974351550161 is a wasteful number, since it uses less digits than its factorization.

1974351550161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375425135.

The product of its (nonzero) digits is 567000, while the sum is 48.

The spelling of 1974351550161 in words is "one trillion, nine hundred seventy-four billion, three hundred fifty-one million, five hundred fifty thousand, one hundred sixty-one".