1988419056 has 40 divisors (see below), whose sum is σ = 5531885520. Its totient is φ = 611821056.

The previous prime is 1988419049. The next prime is 1988419063. The reversal of 1988419056 is 6509148891.

It is an interprime number because it is at equal distance from previous prime (1988419049) and next prime (1988419063).

It is a super-2 number, since 2×1988419056² = 7907620684527862272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1592661 + ... + 1593908.

It is an arithmetic number, because the mean of its divisors is an integer number (138297138).

Almost surely, 2^1988419056 is an apocalyptic number.

1988419056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1988419056 is an abundant number, since it is smaller than the sum of its proper divisors (3543466464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1988419056 is a wasteful number, since it uses less digits than its factorization.

1988419056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186593 (or 3186587 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 1988419056 is about 44591.6926792424. The cubic root of 1988419056 is about 1257.4844950376.

The spelling of 1988419056 in words is "one billion, nine hundred eighty-eight million, four hundred nineteen thousand, fifty-six".