196215401 has 2 divisors, whose sum is σ = 196215402. Its totient is φ = 196215400.

The previous prime is 196215391. The next prime is 196215419. The reversal of 196215401 is 104512691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107101801 + 89113600 = 10349^2 + 9440^2 .

It is an emirp because it is prime and its reverse (104512691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196215401 - 2¹⁸ = 195953257 is a prime.

It is not a weakly prime, because it can be changed into another prime (196215491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98107700 + 98107701.

It is an arithmetic number, because the mean of its divisors is an integer number (98107701).

Almost surely, 2^196215401 is an apocalyptic number.

It is an amenable number.

196215401 is a deficient number, since it is larger than the sum of its proper divisors (1).

196215401 is an equidigital number, since it uses as much as digits as its factorization.

196215401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 196215401 is about 14007.6907804249. The cubic root of 196215401 is about 581.0912876725.

The spelling of 196215401 in words is "one hundred ninety-six million, two hundred fifteen thousand, four hundred one".