1990555315 has 16 divisors (see below), whose sum is σ = 2731032000. Its totient is φ = 1364388480.

The previous prime is 1990555271. The next prime is 1990555363. The reversal of 1990555315 is 5135550991.

It is not a de Polignac number, because 1990555315 - 2¹¹ = 1990553267 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 85561 + ... + 106309.

It is an arithmetic number, because the mean of its divisors is an integer number (170689500).

Almost surely, 2^1990555315 is an apocalyptic number.

1990555315 is a deficient number, since it is larger than the sum of its proper divisors (740476685).

1990555315 is a wasteful number, since it uses less digits than its factorization.

1990555315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23502.

The product of its (nonzero) digits is 151875, while the sum is 43.

The square root of 1990555315 is about 44615.6398026522. The cubic root of 1990555315 is about 1257.9346602282.

The spelling of 1990555315 in words is "one billion, nine hundred ninety million, five hundred fifty-five thousand, three hundred fifteen".