1980569400 has 48 divisors (see below), whose sum is σ = 6139767000. Its totient is φ = 528151680.

The previous prime is 1980569389. The next prime is 1980569417. The reversal of 1980569400 is 49650891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1649875 + ... + 1651074.

Almost surely, 2^1980569400 is an apocalyptic number.

1980569400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1980569400 is an abundant number, since it is smaller than the sum of its proper divisors (4159197600).

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

1980569400 is a wasteful number, since it uses less digits than its factorization.

1980569400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300968 (or 3300959 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1980569400 is about 44503.5886193462. The cubic root of 1980569400 is about 1255.8275944271.

The spelling of 1980569400 in words is "one billion, nine hundred eighty million, five hundred sixty-nine thousand, four hundred".