1988257119 has 32 divisors (see below), whose sum is σ = 2736729600. Its totient is φ = 1283506560.

The previous prime is 1988257097. The next prime is 1988257129. The reversal of 1988257119 is 9117528891.

It is not a de Polignac number, because 1988257119 - 2⁵ = 1988257087 is a prime.

It is a super-2 number, since 2×1988257119² = 7906332742508360322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988257129) 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 31 ways as a sum of consecutive naturals, for example, 5245872 + ... + 5246250.

It is an arithmetic number, because the mean of its divisors is an integer number (85522800).

Almost surely, 2^1988257119 is an apocalyptic number.

1988257119 is a deficient number, since it is larger than the sum of its proper divisors (748472481).

1988257119 is a wasteful number, since it uses less digits than its factorization.

1988257119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815.

The product of its digits is 362880, while the sum is 51.

The square root of 1988257119 is about 44589.8768668405. The cubic root of 1988257119 is about 1257.4503575664.

The spelling of 1988257119 in words is "one billion, nine hundred eighty-eight million, two hundred fifty-seven thousand, one hundred nineteen".