1160106721 has 4 divisors (see below), whose sum is σ = 1160502532. Its totient is φ = 1159710912.

The previous prime is 1160106659. The next prime is 1160106737. The reversal of 1160106721 is 1276010611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1047428496 + 112678225 = 32364^2 + 10615^2 .

It is a cyclic number.

It is not a de Polignac number, because 1160106721 - 2¹⁵ = 1160073953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1160106221) 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, 193476 + ... + 199381.

It is an arithmetic number, because the mean of its divisors is an integer number (290125633).

Almost surely, 2^1160106721 is an apocalyptic number.

It is an amenable number.

1160106721 is a deficient number, since it is larger than the sum of its proper divisors (395811).

1160106721 is an equidigital number, since it uses as much as digits as its factorization.

1160106721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395810.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 1160106721 is about 34060.3394140458. The cubic root of 1160106721 is about 1050.7497958180.

The spelling of 1160106721 in words is "one billion, one hundred sixty million, one hundred six thousand, seven hundred twenty-one".