1002137860 has 12 divisors (see below), whose sum is σ = 2104489548. Its totient is φ = 400855136.

The previous prime is 1002137839. The next prime is 1002137861. The reversal of 1002137860 is 687312001.

It can be written as a sum of positive squares in 2 ways, for example, as 312865344 + 689272516 = 17688^2 + 26254^2 .

It is a super-3 number, since 3×1002137860³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1002137861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25053427 + ... + 25053466.

It is an arithmetic number, because the mean of its divisors is an integer number (175374129).

Almost surely, 2^1002137860 is an apocalyptic number.

1002137860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002137860 is an abundant number, since it is smaller than the sum of its proper divisors (1102351688).

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

1002137860 is a wasteful number, since it uses less digits than its factorization.

1002137860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50106902 (or 50106900 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1002137860 is about 31656.5610892908. The cubic root of 1002137860 is about 1000.7121127750.

Adding to 1002137860 its reverse (687312001), we get a palindrome (1689449861).

The spelling of 1002137860 in words is "one billion, two million, one hundred thirty-seven thousand, eight hundred sixty".