1203949171 has 2 divisors, whose sum is σ = 1203949172. Its totient is φ = 1203949170.

The previous prime is 1203949093. The next prime is 1203949183. The reversal of 1203949171 is 1719493021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1203949171 - 2²³ = 1195560563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1203949171.

It is not a weakly prime, because it can be changed into another prime (1203941171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601974585 + 601974586.

It is an arithmetic number, because the mean of its divisors is an integer number (601974586).

Almost surely, 2^1203949171 is an apocalyptic number.

1203949171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203949171 is an equidigital number, since it uses as much as digits as its factorization.

1203949171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1203949171 is about 34697.9707043510. The cubic root of 1203949171 is about 1063.8230206115.

The spelling of 1203949171 in words is "one billion, two hundred three million, nine hundred forty-nine thousand, one hundred seventy-one".