16293961 has 2 divisors, whose sum is σ = 16293962. Its totient is φ = 16293960.

The previous prime is 16293943. The next prime is 16293989. The reversal of 16293961 is 16939261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11095561 + 5198400 = 3331^2 + 2280^2 .

It is an emirp because it is prime and its reverse (16939261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16293961 - 2⁵ = 16293929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16293961.

It is not a weakly prime, because it can be changed into another prime (16293461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8146980 + 8146981.

It is an arithmetic number, because the mean of its divisors is an integer number (8146981).

Almost surely, 2^16293961 is an apocalyptic number.

It is an amenable number.

16293961 is a deficient number, since it is larger than the sum of its proper divisors (1).

16293961 is an equidigital number, since it uses as much as digits as its factorization.

16293961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 37.

The square root of 16293961 is about 4036.5778823157. The cubic root of 16293961 is about 253.5180529893.

The spelling of 16293961 in words is "sixteen million, two hundred ninety-three thousand, nine hundred sixty-one".