1920109192 has 16 divisors (see below), whose sum is σ = 3600872460. Its totient is φ = 959876544.

The previous prime is 1920109153. The next prime is 1920109231. The reversal of 1920109192 is 2919010291.

It is an interprime number because it is at equal distance from previous prime (1920109153) and next prime (1920109231).

It can be written as a sum of positive squares in 2 ways, for example, as 1728397476 + 191711716 = 41574^2 + 13846^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31098 + ... + 69334.

Almost surely, 2^1920109192 is an apocalyptic number.

It is an amenable number.

1920109192 is a deficient number, since it is larger than the sum of its proper divisors (1680763268).

1920109192 is a wasteful number, since it uses less digits than its factorization.

1920109192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44520 (or 44516 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 1920109192 is about 43819.0505602301. The cubic root of 1920109192 is about 1242.9165633885.

The spelling of 1920109192 in words is "one billion, nine hundred twenty million, one hundred nine thousand, one hundred ninety-two".