161910294293 has 8 divisors (see below), whose sum is σ = 176637757536. Its totient is φ = 147184222000.

The previous prime is 161910294257. The next prime is 161910294323. The reversal of 161910294293 is 392492019161.

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

It is a cyclic number.

It is not a de Polignac number, because 161910294293 - 2¹⁸ = 161910032149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161910294193) 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, 96446 + ... + 577167.

It is an arithmetic number, because the mean of its divisors is an integer number (22079719692).

Almost surely, 2^161910294293 is an apocalyptic number.

It is an amenable number.

161910294293 is a deficient number, since it is larger than the sum of its proper divisors (14727463243).

161910294293 is a wasteful number, since it uses less digits than its factorization.

161910294293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695475.

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 161910294293 in words is "one hundred sixty-one billion, nine hundred ten million, two hundred ninety-four thousand, two hundred ninety-three".