1358819980 has 36 divisors (see below), whose sum is σ = 3319405488. Its totient is φ = 465880800.

The previous prime is 1358819971. The next prime is 1358819999. The reversal of 1358819980 is 899188531.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

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 11 ways as a sum of consecutive naturals, for example, 692296 + ... + 694255.

It is an arithmetic number, because the mean of its divisors is an integer number (92205708).

Almost surely, 2^1358819980 is an apocalyptic number.

1358819980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1358819980 is an abundant number, since it is smaller than the sum of its proper divisors (1960585508).

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

1358819980 is a wasteful number, since it uses less digits than its factorization.

1358819980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386574 (or 1386565 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 52.

The square root of 1358819980 is about 36862.1754648312. The cubic root of 1358819980 is about 1107.6111219854.

The spelling of 1358819980 in words is "one billion, three hundred fifty-eight million, eight hundred nineteen thousand, nine hundred eighty".