1200163061 has 4 divisors (see below), whose sum is σ = 1200444000. Its totient is φ = 1199882124.

The previous prime is 1200163049. The next prime is 1200163091. The reversal of 1200163061 is 1603610021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1200163061 - 2²² = 1195968757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200163021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133961 + ... + 142638.

It is an arithmetic number, because the mean of its divisors is an integer number (300111000).

Almost surely, 2^1200163061 is an apocalyptic number.

It is an amenable number.

1200163061 is a deficient number, since it is larger than the sum of its proper divisors (280939).

1200163061 is an equidigital number, since it uses as much as digits as its factorization.

1200163061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280938.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1200163061 is about 34643.3696542354. The cubic root of 1200163061 is about 1062.7066998273.

Adding to 1200163061 its reverse (1603610021), we get a palindrome (2803773082).

The spelling of 1200163061 in words is "one billion, two hundred million, one hundred sixty-three thousand, sixty-one".