1201545803 has 2 divisors, whose sum is σ = 1201545804. Its totient is φ = 1201545802.

The previous prime is 1201545781. The next prime is 1201545809. The reversal of 1201545803 is 3085451021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1201545803 - 2⁶ = 1201545739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201545809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600772901 + 600772902.

It is an arithmetic number, because the mean of its divisors is an integer number (600772902).

Almost surely, 2^1201545803 is an apocalyptic number.

1201545803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201545803 is an equidigital number, since it uses as much as digits as its factorization.

1201545803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1201545803 is about 34663.3207151306. The cubic root of 1201545803 is about 1063.1146680623.

Adding to 1201545803 its reverse (3085451021), we get a palindrome (4286996824).

The spelling of 1201545803 in words is "one billion, two hundred one million, five hundred forty-five thousand, eight hundred three".