196154953 has 2 divisors, whose sum is σ = 196154954. Its totient is φ = 196154952.

The previous prime is 196154873. The next prime is 196154969. The reversal of 196154953 is 359451691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160478224 + 35676729 = 12668^2 + 5973^2 .

It is an emirp because it is prime and its reverse (359451691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196154953 - 2¹³ = 196146761 is a prime.

It is not a weakly prime, because it can be changed into another prime (196154053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98077476 + 98077477.

It is an arithmetic number, because the mean of its divisors is an integer number (98077477).

Almost surely, 2^196154953 is an apocalyptic number.

It is an amenable number.

196154953 is a deficient number, since it is larger than the sum of its proper divisors (1).

196154953 is an equidigital number, since it uses as much as digits as its factorization.

196154953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 43.

The square root of 196154953 is about 14005.5329423767. The cubic root of 196154953 is about 581.0316093570.

The spelling of 196154953 in words is "one hundred ninety-six million, one hundred fifty-four thousand, nine hundred fifty-three".