1121534989 has 8 divisors (see below), whose sum is σ = 1140297080. Its totient is φ = 1102864896.

The previous prime is 1121534971. The next prime is 1121535031. The reversal of 1121534989 is 9894351211.

It can be written as a sum of positive squares in 4 ways, for example, as 27910089 + 1093624900 = 5283^2 + 33070^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121534989 - 2¹³ = 1121526797 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 (1121534969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1807 + ... + 47395.

It is an arithmetic number, because the mean of its divisors is an integer number (142537135).

Almost surely, 2^1121534989 is an apocalyptic number.

It is an amenable number.

1121534989 is a deficient number, since it is larger than the sum of its proper divisors (18762091).

1121534989 is an equidigital number, since it uses as much as digits as its factorization.

1121534989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45999.

The product of its digits is 77760, while the sum is 43.

The square root of 1121534989 is about 33489.3264936756. The cubic root of 1121534989 is about 1038.9730336366.

The spelling of 1121534989 in words is "one billion, one hundred twenty-one million, five hundred thirty-four thousand, nine hundred eighty-nine".