1160120561 has 4 divisors (see below), whose sum is σ = 1162483824. Its totient is φ = 1157757300.

The previous prime is 1160120539. The next prime is 1160120567. The reversal of 1160120561 is 1650210611.

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 1160120561 - 2⁶ = 1160120497 is a prime.

It is a super-3 number, since 3×1160120561³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1160120567) 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, 1180895 + ... + 1181876.

It is an arithmetic number, because the mean of its divisors is an integer number (290620956).

Almost surely, 2^1160120561 is an apocalyptic number.

It is an amenable number.

1160120561 is a deficient number, since it is larger than the sum of its proper divisors (2363263).

1160120561 is an equidigital number, since it uses as much as digits as its factorization.

1160120561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2363262.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 1160120561 is about 34060.5425822901. The cubic root of 1160120561 is about 1050.7539742610.

The spelling of 1160120561 in words is "one billion, one hundred sixty million, one hundred twenty thousand, five hundred sixty-one".