1754149661 has 16 divisors (see below), whose sum is σ = 1929121920. Its totient is φ = 1581814080.

The previous prime is 1754149619. The next prime is 1754149669. The reversal of 1754149661 is 1669414571.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1754149661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1754149669) 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, 859280 + ... + 861318.

It is an arithmetic number, because the mean of its divisors is an integer number (120570120).

Almost surely, 2^1754149661 is an apocalyptic number.

1754149661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1754149661 is a deficient number, since it is larger than the sum of its proper divisors (174972259).

1754149661 is a wasteful number, since it uses less digits than its factorization.

1754149661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644.

The product of its digits is 181440, while the sum is 44.

The square root of 1754149661 is about 41882.5698948859. The cubic root of 1754149661 is about 1206.0228824336.

The spelling of 1754149661 in words is "one billion, seven hundred fifty-four million, one hundred forty-nine thousand, six hundred sixty-one".