1361373820 has 48 divisors (see below), whose sum is σ = 2901951360. Its totient is φ = 536380416.

The previous prime is 1361373791. The next prime is 1361373823. The reversal of 1361373820 is 283731631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361373823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936214 + ... + 937666.

It is an arithmetic number, because the mean of its divisors is an integer number (60457320).

Almost surely, 2^1361373820 is an apocalyptic number.

1361373820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361373820 is an abundant number, since it is smaller than the sum of its proper divisors (1540577540).

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

1361373820 is a wasteful number, since it uses less digits than its factorization.

1361373820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134 (or 2132 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 1361373820 is about 36896.7995902084. The cubic root of 1361373820 is about 1108.3045892006.

The spelling of 1361373820 in words is "one billion, three hundred sixty-one million, three hundred seventy-three thousand, eight hundred twenty".