1912220975 has 48 divisors (see below), whose sum is σ = 2774822400. Its totient is φ = 1280138880.

The previous prime is 1912220969. The next prime is 1912221001. The reversal of 1912220975 is 5790222191.

It is not a de Polignac number, because 1912220975 - 2¹² = 1912216879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1723721 + ... + 1724829.

It is an arithmetic number, because the mean of its divisors is an integer number (57808800).

Almost surely, 2^1912220975 is an apocalyptic number.

1912220975 is a deficient number, since it is larger than the sum of its proper divisors (862601425).

1912220975 is a wasteful number, since it uses less digits than its factorization.

1912220975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352 (or 1347 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 1912220975 is about 43728.9489354592. The cubic root of 1912220975 is about 1241.2121720421.

The spelling of 1912220975 in words is "one billion, nine hundred twelve million, two hundred twenty thousand, nine hundred seventy-five".