1537680140 has 24 divisors (see below), whose sum is σ = 3230003952. Its totient is φ = 614905280.

The previous prime is 1537680101. The next prime is 1537680143. The reversal of 1537680140 is 410867351.

It is a self number, because there is not a number n which added to its sum of digits gives 1537680140.

It is not an unprimeable number, because it can be changed into a prime (1537680143) 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, 87710 + ... + 103770.

It is an arithmetic number, because the mean of its divisors is an integer number (134583498).

Almost surely, 2^1537680140 is an apocalyptic number.

1537680140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1537680140 is an abundant number, since it is smaller than the sum of its proper divisors (1692323812).

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

1537680140 is a wasteful number, since it uses less digits than its factorization.

1537680140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20857 (or 20855 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1537680140 is about 39213.2648474977. The cubic root of 1537680140 is about 1154.2201941286.

The spelling of 1537680140 in words is "one billion, five hundred thirty-seven million, six hundred eighty thousand, one hundred forty".