197616403 has 2 divisors, whose sum is σ = 197616404. Its totient is φ = 197616402.

The previous prime is 197616361. The next prime is 197616407. The reversal of 197616403 is 304616791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197616403 is a prime.

It is not a weakly prime, because it can be changed into another prime (197616407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98808201 + 98808202.

It is an arithmetic number, because the mean of its divisors is an integer number (98808202).

Almost surely, 2^197616403 is an apocalyptic number.

197616403 is a deficient number, since it is larger than the sum of its proper divisors (1).

197616403 is an equidigital number, since it uses as much as digits as its factorization.

197616403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 197616403 is about 14057.6101453981. The cubic root of 197616403 is about 582.4710300143.

The spelling of 197616403 in words is "one hundred ninety-seven million, six hundred sixteen thousand, four hundred three".