1920479047 has 16 divisors (see below), whose sum is σ = 2071203840. Its totient is φ = 1775505600.

The previous prime is 1920479039. The next prime is 1920479051. The reversal of 1920479047 is 7409740291.

It is a cyclic number.

It is not a de Polignac number, because 1920479047 - 2³ = 1920479039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1920478994 and 1920479012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920479027) 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, 940854 + ... + 942892.

It is an arithmetic number, because the mean of its divisors is an integer number (129450240).

Almost surely, 2^1920479047 is an apocalyptic number.

1920479047 is a deficient number, since it is larger than the sum of its proper divisors (150724793).

1920479047 is a wasteful number, since it uses less digits than its factorization.

1920479047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 1920479047 is about 43823.2706104873. The cubic root of 1920479047 is about 1242.9963625643.

The spelling of 1920479047 in words is "one billion, nine hundred twenty million, four hundred seventy-nine thousand, forty-seven".