1980897270 has 64 divisors (see below), whose sum is σ = 5274305280. Its totient is φ = 472073600.

The previous prime is 1980897263. The next prime is 1980897283. The reversal of 1980897270 is 727980891.

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 31 ways as a sum of consecutive naturals, for example, 31401 + ... + 70340.

It is an arithmetic number, because the mean of its divisors is an integer number (82411020).

Almost surely, 2^1980897270 is an apocalyptic number.

1980897270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1980897270 is an abundant number, since it is smaller than the sum of its proper divisors (3293408010).

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

1980897270 is a wasteful number, since it uses less digits than its factorization.

1980897270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101821.

The product of its (nonzero) digits is 508032, while the sum is 51.

The square root of 1980897270 is about 44507.2721024329. The cubic root of 1980897270 is about 1255.8968885527.

The spelling of 1980897270 in words is "one billion, nine hundred eighty million, eight hundred ninety-seven thousand, two hundred seventy".