1146729689 has 4 divisors (see below), whose sum is σ = 1310548224. Its totient is φ = 982911156.

The previous prime is 1146729673. The next prime is 1146729691. The reversal of 1146729689 is 9869276411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9869276411 = 67 ⋅147302633.

It is a cyclic number.

It is not a de Polignac number, because 1146729689 - 2⁴ = 1146729673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1146729689.

It is not an unprimeable number, because it can be changed into a prime (1146726689) 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, 81909257 + ... + 81909270.

It is an arithmetic number, because the mean of its divisors is an integer number (327637056).

Almost surely, 2^1146729689 is an apocalyptic number.

It is an amenable number.

1146729689 is a deficient number, since it is larger than the sum of its proper divisors (163818535).

1146729689 is an equidigital number, since it uses as much as digits as its factorization.

1146729689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163818534.

The product of its digits is 1306368, while the sum is 53.

The square root of 1146729689 is about 33863.3974816468. The cubic root of 1146729689 is about 1046.6954883517.

The spelling of 1146729689 in words is "one billion, one hundred forty-six million, seven hundred twenty-nine thousand, six hundred eighty-nine".