1740540921 has 16 divisors (see below), whose sum is σ = 2675727744. Its totient is φ = 985791744.

The previous prime is 1740540917. The next prime is 1740540929. The reversal of 1740540921 is 1290450471.

It is a happy number.

It is not a de Polignac number, because 1740540921 - 2² = 1740540917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1740540929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364366 + ... + 369111.

It is an arithmetic number, because the mean of its divisors is an integer number (167232984).

Almost surely, 2^1740540921 is an apocalyptic number.

It is an amenable number.

1740540921 is a deficient number, since it is larger than the sum of its proper divisors (935186823).

1740540921 is a wasteful number, since it uses less digits than its factorization.

1740540921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733600.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1740540921 is about 41719.7905196083. The cubic root of 1740540921 is about 1202.8959963542.

The spelling of 1740540921 in words is "one billion, seven hundred forty million, five hundred forty thousand, nine hundred twenty-one".