1013638000 has 80 divisors (see below), whose sum is σ = 2530195200. Its totient is φ = 392352000.

The previous prime is 1013637997. The next prime is 1013638007. The reversal of 1013638000 is 8363101.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013638007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53826 + ... + 70174.

It is an arithmetic number, because the mean of its divisors is an integer number (31627440).

Almost surely, 2^1013638000 is an apocalyptic number.

1013638000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1013638000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1265097600).

1013638000 is an abundant number, since it is smaller than the sum of its proper divisors (1516557200).

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

1013638000 is a wasteful number, since it uses less digits than its factorization.

1013638000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16403 (or 16387 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1013638000 is about 31837.6820764326. The cubic root of 1013638000 is about 1004.5254890547.

The spelling of 1013638000 in words is "one billion, thirteen million, six hundred thirty-eight thousand".