1129722343 has 4 divisors (see below), whose sum is σ = 1130426080. Its totient is φ = 1129018608.

The previous prime is 1129722331. The next prime is 1129722353. The reversal of 1129722343 is 3432279211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3432279211 = 37 ⋅92764303.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129722343 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1129722299 and 1129722308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129722353) 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, 349455 + ... + 352672.

It is an arithmetic number, because the mean of its divisors is an integer number (282606520).

Almost surely, 2^1129722343 is an apocalyptic number.

1129722343 is a deficient number, since it is larger than the sum of its proper divisors (703737).

1129722343 is an equidigital number, since it uses as much as digits as its factorization.

1129722343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703736.

The product of its digits is 18144, while the sum is 34.

The square root of 1129722343 is about 33611.3424754204. The cubic root of 1129722343 is about 1041.4951199645.

The spelling of 1129722343 in words is "one billion, one hundred twenty-nine million, seven hundred twenty-two thousand, three hundred forty-three".