1921055135 has 8 divisors (see below), whose sum is σ = 2426596080. Its totient is φ = 1455957504.

The previous prime is 1921055107. The next prime is 1921055137. The reversal of 1921055135 is 5315501291.

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 1921055135 - 2⁸ = 1921054879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921055137) 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 7 ways as a sum of consecutive naturals, for example, 10110722 + ... + 10110911.

It is an arithmetic number, because the mean of its divisors is an integer number (303324510).

Almost surely, 2^1921055135 is an apocalyptic number.

1921055135 is a deficient number, since it is larger than the sum of its proper divisors (505540945).

1921055135 is a wasteful number, since it uses less digits than its factorization.

1921055135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20221657.

The product of its (nonzero) digits is 6750, while the sum is 32.

The square root of 1921055135 is about 43829.8429725684. The cubic root of 1921055135 is about 1243.1206377550.

The spelling of 1921055135 in words is "one billion, nine hundred twenty-one million, fifty-five thousand, one hundred thirty-five".