32191493 has 2 divisors, whose sum is σ = 32191494. Its totient is φ = 32191492.

The previous prime is 32191457. The next prime is 32191501. The reversal of 32191493 is 39419123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23203489 + 8988004 = 4817^2 + 2998^2 .

It is an emirp because it is prime and its reverse (39419123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32191493 - 2⁶ = 32191429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32191793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16095746 + 16095747.

It is an arithmetic number, because the mean of its divisors is an integer number (16095747).

Almost surely, 2^32191493 is an apocalyptic number.

It is an amenable number.

32191493 is a deficient number, since it is larger than the sum of its proper divisors (1).

32191493 is an equidigital number, since it uses as much as digits as its factorization.

32191493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 32191493 is about 5673.7547532476. The cubic root of 32191493 is about 318.1122350821.

The spelling of 32191493 in words is "thirty-two million, one hundred ninety-one thousand, four hundred ninety-three".