1990053195 has 16 divisors (see below), whose sum is σ = 3429015072. Its totient is φ = 979718400.

The previous prime is 1990053193. The next prime is 1990053209. The reversal of 1990053195 is 5913500991.

It is not a de Polignac number, because 1990053195 - 2¹ = 1990053193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1990053193) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5102506 + ... + 5102895.

It is an arithmetic number, because the mean of its divisors is an integer number (214313442).

Almost surely, 2^1990053195 is an apocalyptic number.

1990053195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1990053195 is a deficient number, since it is larger than the sum of its proper divisors (1438961877).

1990053195 is a wasteful number, since it uses less digits than its factorization.

1990053195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10205422.

The product of its (nonzero) digits is 54675, while the sum is 42.

The square root of 1990053195 is about 44610.0122730313. The cubic root of 1990053195 is about 1257.8288794837.

The spelling of 1990053195 in words is "one billion, nine hundred ninety million, fifty-three thousand, one hundred ninety-five".