1988546445 has 24 divisors (see below), whose sum is σ = 3448317600. Its totient is φ = 1060095456.

The previous prime is 1988546411. The next prime is 1988546467. The reversal of 1988546445 is 5446458891.

1988546445 is a `hidden beast` number, since 1 + 98 + 8 + 546 + 4 + 4 + 5 = 666.

It is not a de Polignac number, because 1988546445 - 2²⁷ = 1854328717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1988546391 and 1988546400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111346 + ... + 127964.

It is an arithmetic number, because the mean of its divisors is an integer number (143679900).

Almost surely, 2^1988546445 is an apocalyptic number.

1988546445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1988546445 is a deficient number, since it is larger than the sum of its proper divisors (1459771155).

1988546445 is a wasteful number, since it uses less digits than its factorization.

1988546445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19289 (or 19286 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The square root of 1988546445 is about 44593.1210502248. The cubic root of 1988546445 is about 1257.5113482422.

The spelling of 1988546445 in words is "one billion, nine hundred eighty-eight million, five hundred forty-six thousand, four hundred forty-five".