1920161279 has 8 divisors (see below), whose sum is σ = 2010180480. Its totient is φ = 1830686616.

The previous prime is 1920161231. The next prime is 1920161291. The reversal of 1920161279 is 9721610291.

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 1920161279 - 2²⁰ = 1919112703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920161209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128909 + ... + 143030.

It is an arithmetic number, because the mean of its divisors is an integer number (251272560).

Almost surely, 2^1920161279 is an apocalyptic number.

1920161279 is a deficient number, since it is larger than the sum of its proper divisors (90019201).

1920161279 is a wasteful number, since it uses less digits than its factorization.

1920161279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272269.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 1920161279 is about 43819.6448981504. The cubic root of 1920161279 is about 1242.9278021955.

The spelling of 1920161279 in words is "one billion, nine hundred twenty million, one hundred sixty-one thousand, two hundred seventy-nine".