1002111540 has 24 divisors (see below), whose sum is σ = 2805912480. Its totient is φ = 267229728.

The previous prime is 1002111503. The next prime is 1002111613. The reversal of 1002111540 is 451112001.

It is a happy number.

1002111540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8350870 + ... + 8350989.

It is an arithmetic number, because the mean of its divisors is an integer number (116913020).

Almost surely, 2^1002111540 is an apocalyptic number.

1002111540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002111540 is an abundant number, since it is smaller than the sum of its proper divisors (1803800940).

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

1002111540 is a wasteful number, since it uses less digits than its factorization.

1002111540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16701871 (or 16701869 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1002111540 is about 31656.1453749505. The cubic root of 1002111540 is about 1000.7033518469.

Adding to 1002111540 its reverse (451112001), we get a palindrome (1453223541).

The spelling of 1002111540 in words is "one billion, two million, one hundred eleven thousand, five hundred forty".