1151668109 has 4 divisors (see below), whose sum is σ = 1212282240. Its totient is φ = 1091053980.

The previous prime is 1151668081. The next prime is 1151668127. The reversal of 1151668109 is 9018661511.

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 1151668109 - 2¹² = 1151664013 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 (1151608109) 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, 30307037 + ... + 30307074.

It is an arithmetic number, because the mean of its divisors is an integer number (303070560).

Almost surely, 2^1151668109 is an apocalyptic number.

1151668109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1151668109 is a deficient number, since it is larger than the sum of its proper divisors (60614131).

1151668109 is an equidigital number, since it uses as much as digits as its factorization.

1151668109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60614130.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 1151668109 is about 33936.2359285764. The cubic root of 1151668109 is about 1048.1958766621.

The spelling of 1151668109 in words is "one billion, one hundred fifty-one million, six hundred sixty-eight thousand, one hundred nine".