1920092121 has 20 divisors (see below), whose sum is σ = 2908692864. Its totient is φ = 1262028600.

The previous prime is 1920092107. The next prime is 1920092123. The reversal of 1920092121 is 1212900291.

It is not a de Polignac number, because 1920092121 - 2¹³ = 1920083929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1920092123) 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 19 ways as a sum of consecutive naturals, for example, 161185 + ... + 172686.

Almost surely, 2^1920092121 is an apocalyptic number.

It is an amenable number.

1920092121 is a deficient number, since it is larger than the sum of its proper divisors (988600743).

1920092121 is an equidigital number, since it uses as much as digits as its factorization.

1920092121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333954 (or 333945 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1920092121 is about 43818.8557700906. The cubic root of 1920092121 is about 1242.9128799363.

The spelling of 1920092121 in words is "one billion, nine hundred twenty million, ninety-two thousand, one hundred twenty-one".