1635113140 has 12 divisors (see below), whose sum is σ = 3433737636. Its totient is φ = 654045248.

The previous prime is 1635113111. The next prime is 1635113143. The reversal of 1635113140 is 413115361.

It can be written as a sum of positive squares in 2 ways, for example, as 546904996 + 1088208144 = 23386^2 + 32988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1635113143) 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, 40877809 + ... + 40877848.

It is an arithmetic number, because the mean of its divisors is an integer number (286144803).

Almost surely, 2^1635113140 is an apocalyptic number.

1635113140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1635113140 is an abundant number, since it is smaller than the sum of its proper divisors (1798624496).

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

1635113140 is a wasteful number, since it uses less digits than its factorization.

1635113140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81755666 (or 81755664 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1635113140 is about 40436.5322449886. The cubic root of 1635113140 is about 1178.1012122349.

The spelling of 1635113140 in words is "one billion, six hundred thirty-five million, one hundred thirteen thousand, one hundred forty".