161950742794 has 8 divisors (see below), whose sum is σ = 257215885668. Its totient is φ = 76212114240.

The previous prime is 161950742783. The next prime is 161950742831. The reversal of 161950742794 is 497247059161.

It can be written as a sum of positive squares in 2 ways, for example, as 158089736025 + 3861006769 = 397605^2 + 62137^2 .

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

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, 2381628537 + ... + 2381628604.

Almost surely, 2^161950742794 is an apocalyptic number.

161950742794 is a deficient number, since it is larger than the sum of its proper divisors (95265142874).

161950742794 is a wasteful number, since it uses less digits than its factorization.

161950742794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763257160.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 161950742794 in words is "one hundred sixty-one billion, nine hundred fifty million, seven hundred forty-two thousand, seven hundred ninety-four".