1920091102 has 32 divisors (see below), whose sum is σ = 3050369280. Its totient is φ = 905049600.

The previous prime is 1920091093. The next prime is 1920091123. The reversal of 1920091102 is 2011900291.

It is a congruent number.

It is an unprimeable number.

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, 684102 + ... + 686902.

It is an arithmetic number, because the mean of its divisors is an integer number (95324040).

Almost surely, 2^1920091102 is an apocalyptic number.

1920091102 is a deficient number, since it is larger than the sum of its proper divisors (1130278178).

1920091102 is a wasteful number, since it uses less digits than its factorization.

1920091102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 1920091102 is about 43818.8441426745. The cubic root of 1920091102 is about 1242.9126600634.

Adding to 1920091102 its reverse (2011900291), we get a palindrome (3931991393).

The spelling of 1920091102 in words is "one billion, nine hundred twenty million, ninety-one thousand, one hundred two".