1373650840 has 32 divisors (see below), whose sum is σ = 3092554080. Its totient is φ = 549133312.

The previous prime is 1373650829. The next prime is 1373650843. The reversal of 1373650840 is 480563731.

It is a self number, because there is not a number n which added to its sum of digits gives 1373650840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373650843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64584 + ... + 83176.

It is an arithmetic number, because the mean of its divisors is an integer number (96642315).

Almost surely, 2^1373650840 is an apocalyptic number.

1373650840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1373650840 is an abundant number, since it is smaller than the sum of its proper divisors (1718903240).

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

1373650840 is a wasteful number, since it uses less digits than its factorization.

1373650840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20451 (or 20447 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1373650840 is about 37062.7959010110. The cubic root of 1373650840 is about 1111.6262286923.

The spelling of 1373650840 in words is "one billion, three hundred seventy-three million, six hundred fifty thousand, eight hundred forty".