1121381629 has 4 divisors (see below), whose sum is σ = 1170137376. Its totient is φ = 1072625884.

The previous prime is 1121381621. The next prime is 1121381669. The reversal of 1121381629 is 9261831211.

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 not a de Polignac number, because 1121381629 - 2³ = 1121381621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121381594 and 1121381603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121381621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24377839 + ... + 24377884.

It is an arithmetic number, because the mean of its divisors is an integer number (292534344).

Almost surely, 2^1121381629 is an apocalyptic number.

It is an amenable number.

1121381629 is a deficient number, since it is larger than the sum of its proper divisors (48755747).

1121381629 is an equidigital number, since it uses as much as digits as its factorization.

1121381629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48755746.

The product of its digits is 5184, while the sum is 34.

The square root of 1121381629 is about 33487.0367306515. The cubic root of 1121381629 is about 1038.9256746839.

The spelling of 1121381629 in words is "one billion, one hundred twenty-one million, three hundred eighty-one thousand, six hundred twenty-nine".