161214293 has 2 divisors, whose sum is σ = 161214294. Its totient is φ = 161214292.

The previous prime is 161214289. The next prime is 161214307. The reversal of 161214293 is 392412161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161213809 + 484 = 12697^2 + 22^2 .

It is a cyclic number.

It is not a de Polignac number, because 161214293 - 2² = 161214289 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161214223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80607146 + 80607147.

It is an arithmetic number, because the mean of its divisors is an integer number (80607147).

Almost surely, 2^161214293 is an apocalyptic number.

It is an amenable number.

161214293 is a deficient number, since it is larger than the sum of its proper divisors (1).

161214293 is an equidigital number, since it uses as much as digits as its factorization.

161214293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 161214293 is about 12697.0190596061. The cubic root of 161214293 is about 544.2534378595.

The spelling of 161214293 in words is "one hundred sixty-one million, two hundred fourteen thousand, two hundred ninety-three".