161293037938 has 8 divisors (see below), whose sum is σ = 241945292160. Its totient is φ = 80644607220.

The previous prime is 161293037933. The next prime is 161293037953. The reversal of 161293037938 is 839730392161.

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

It is not an unprimeable number, because it can be changed into a prime (161293037933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847978 + ... + 1020613.

It is an arithmetic number, because the mean of its divisors is an integer number (30243161520).

Almost surely, 2^161293037938 is an apocalyptic number.

161293037938 is a deficient number, since it is larger than the sum of its proper divisors (80652254222).

161293037938 is a wasteful number, since it uses less digits than its factorization.

161293037938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911752.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 161293037938 in words is "one hundred sixty-one billion, two hundred ninety-three million, thirty-seven thousand, nine hundred thirty-eight".