1920754389 has 16 divisors (see below), whose sum is σ = 2650135040. Its totient is φ = 1236142080.

The previous prime is 1920754387. The next prime is 1920754391. The reversal of 1920754389 is 9834570291.

It is an interprime number because it is at equal distance from previous prime (1920754387) and next prime (1920754391).

It is not a de Polignac number, because 1920754389 - 2¹ = 1920754387 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920754387) 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 15 ways as a sum of consecutive naturals, for example, 12789 + ... + 63285.

It is an arithmetic number, because the mean of its divisors is an integer number (165633440).

Almost surely, 2^1920754389 is an apocalyptic number.

It is an amenable number.

1920754389 is a deficient number, since it is larger than the sum of its proper divisors (729380651).

1920754389 is a wasteful number, since it uses less digits than its factorization.

1920754389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50940.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 1920754389 is about 43826.4120023531. The cubic root of 1920754389 is about 1243.0557631515.

The spelling of 1920754389 in words is "one billion, nine hundred twenty million, seven hundred fifty-four thousand, three hundred eighty-nine".