1930199051 has 4 divisors (see below), whose sum is σ = 2105671704. Its totient is φ = 1754726400.

The previous prime is 1930198993. The next prime is 1930199087. The reversal of 1930199051 is 1509910391.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1930199051 - 2⁶ = 1930198987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1930198996 and 1930199014.

It is not an unprimeable number, because it can be changed into a prime (1930199651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87736310 + ... + 87736331.

It is an arithmetic number, because the mean of its divisors is an integer number (526417926).

Almost surely, 2^1930199051 is an apocalyptic number.

1930199051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1930199051 is a deficient number, since it is larger than the sum of its proper divisors (175472653).

1930199051 is a wasteful number, since it uses less digits than its factorization.

1930199051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175472652.

The product of its (nonzero) digits is 10935, while the sum is 38.

The square root of 1930199051 is about 43934.0306709958. The cubic root of 1930199051 is about 1245.0898686223.

The spelling of 1930199051 in words is "one billion, nine hundred thirty million, one hundred ninety-nine thousand, fifty-one".