1998049572 has 48 divisors (see below), whose sum is σ = 5347238400. Its totient is φ = 644531040.

The previous prime is 1998049561. The next prime is 1998049609. The reversal of 1998049572 is 2759408991.

1998049572 is a `hidden beast` number, since 1 + 9 + 9 + 80 + 495 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295047 + ... + 301742.

It is an arithmetic number, because the mean of its divisors is an integer number (111400800).

Almost surely, 2^1998049572 is an apocalyptic number.

1998049572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1998049572 is an abundant number, since it is smaller than the sum of its proper divisors (3349188828).

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

1998049572 is a wasteful number, since it uses less digits than its factorization.

1998049572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596833 (or 596825 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The square root of 1998049572 is about 44699.5477829474. The cubic root of 1998049572 is about 1259.5113524695.

The spelling of 1998049572 in words is "one billion, nine hundred ninety-eight million, forty-nine thousand, five hundred seventy-two".