2138156510 has 32 divisors (see below), whose sum is σ = 4500790272. Its totient is φ = 716032800.

The previous prime is 2138156417. The next prime is 2138156513. The reversal of 2138156510 is 156518312.

It is a super-2 number, since 2×2138156510² = 9143426522510760200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138156513) 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, 352166 + ... + 358185.

It is an arithmetic number, because the mean of its divisors is an integer number (140649696).

Almost surely, 2^2138156510 is an apocalyptic number.

2138156510 is an abundant number, since it is smaller than the sum of its proper divisors (2362633762).

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

2138156510 is a wasteful number, since it uses less digits than its factorization.

2138156510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710408.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 2138156510 is about 46240.2044761915. The cubic root of 2138156510 is about 1288.2886004877.

The spelling of 2138156510 in words is "two billion, one hundred thirty-eight million, one hundred fifty-six thousand, five hundred ten".