1997880572 has 24 divisors (see below), whose sum is σ = 3516562560. Its totient is φ = 993161520.

The previous prime is 1997880553. The next prime is 1997880581. The reversal of 1997880572 is 2750887991.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1062329 + ... + 1064207.

It is an arithmetic number, because the mean of its divisors is an integer number (146523440).

Almost surely, 2^1997880572 is an apocalyptic number.

It is an amenable number.

1997880572 is a deficient number, since it is larger than the sum of its proper divisors (1518681988).

1997880572 is a wasteful number, since it uses less digits than its factorization.

1997880572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281 (or 3279 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 56.

The square root of 1997880572 is about 44697.6573435342. The cubic root of 1997880572 is about 1259.4758406012.

The spelling of 1997880572 in words is "one billion, nine hundred ninety-seven million, eight hundred eighty thousand, five hundred seventy-two".