1980418040 has 16 divisors (see below), whose sum is σ = 4455940680. Its totient is φ = 792167200.

The previous prime is 1980417997. The next prime is 1980418073. The reversal of 1980418040 is 408140891.

It is a super-2 number, since 2×1980418040² = 7844111226314883200, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 24755186 + ... + 24755265.

Almost surely, 2^1980418040 is an apocalyptic number.

1980418040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1980418040 is an abundant number, since it is smaller than the sum of its proper divisors (2475522640).

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

1980418040 is a wasteful number, since it uses less digits than its factorization.

1980418040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49510462 (or 49510458 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 1980418040 is about 44501.8880498345. Note that the first 3 decimals coincide. The cubic root of 1980418040 is about 1255.7956024644.

The spelling of 1980418040 in words is "one billion, nine hundred eighty million, four hundred eighteen thousand, forty".