1123897049 has 4 divisors (see below), whose sum is σ = 1226069520. Its totient is φ = 1021724580.

The previous prime is 1123897039. The next prime is 1123897051. The reversal of 1123897049 is 9407983211.

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 1123897049 - 2²⁰ = 1122848473 is a prime.

It is a super-3 number, since 3×1123897049³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123897039) 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, 51086219 + ... + 51086240.

It is an arithmetic number, because the mean of its divisors is an integer number (306517380).

Almost surely, 2^1123897049 is an apocalyptic number.

It is an amenable number.

1123897049 is a deficient number, since it is larger than the sum of its proper divisors (102172471).

1123897049 is a wasteful number, since it uses less digits than its factorization.

1123897049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102172470.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 1123897049 is about 33524.5738078801. The cubic root of 1123897049 is about 1039.7019143857.

The spelling of 1123897049 in words is "one billion, one hundred twenty-three million, eight hundred ninety-seven thousand, forty-nine".