1121558419 has 4 divisors (see below), whose sum is σ = 1122029496. Its totient is φ = 1121087344.

The previous prime is 1121558411. The next prime is 1121558423. The reversal of 1121558419 is 9148551211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9148551211 = 317 ⋅28859783.

It is a cyclic number.

It is not a de Polignac number, because 1121558419 - 2³ = 1121558411 is a prime.

It is a super-3 number, since 3×1121558419³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121558411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231949 + ... + 236734.

It is an arithmetic number, because the mean of its divisors is an integer number (280507374).

Almost surely, 2^1121558419 is an apocalyptic number.

1121558419 is a deficient number, since it is larger than the sum of its proper divisors (471077).

1121558419 is an equidigital number, since it uses as much as digits as its factorization.

1121558419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471076.

The product of its digits is 14400, while the sum is 37.

The square root of 1121558419 is about 33489.6763047958. The cubic root of 1121558419 is about 1038.9802686520.

The spelling of 1121558419 in words is "one billion, one hundred twenty-one million, five hundred fifty-eight thousand, four hundred nineteen".