2130172536 has 64 divisors (see below), whose sum is σ = 5619600000. Its totient is φ = 671020416.

The previous prime is 2130172523. The next prime is 2130172537. The reversal of 2130172536 is 6352710312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130172537) 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, 185490 + ... + 196638.

It is an arithmetic number, because the mean of its divisors is an integer number (87806250).

Almost surely, 2^2130172536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2130172536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2809800000).

2130172536 is an abundant number, since it is smaller than the sum of its proper divisors (3489427464).

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

2130172536 is a wasteful number, since it uses less digits than its factorization.

2130172536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11596 (or 11592 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 2130172536 is about 46153.7922168916. The cubic root of 2130172536 is about 1286.6830909994.

Adding to 2130172536 its reverse (6352710312), we get a palindrome (8482882848).

The spelling of 2130172536 in words is "two billion, one hundred thirty million, one hundred seventy-two thousand, five hundred thirty-six".