2138162740 has 24 divisors (see below), whose sum is σ = 5131590912. Its totient is φ = 733084320.

The previous prime is 2138162737. The next prime is 2138162791. The reversal of 2138162740 is 472618312.

It is a junction number, because it is equal to n+sod(n) for n = 2138162696 and 2138162705.

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, 7636156 + ... + 7636435.

It is an arithmetic number, because the mean of its divisors is an integer number (213816288).

Almost surely, 2^2138162740 is an apocalyptic number.

2138162740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2138162740 is an abundant number, since it is smaller than the sum of its proper divisors (2993428172).

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

2138162740 is a wasteful number, since it uses less digits than its factorization.

2138162740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15272607 (or 15272605 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 2138162740 is about 46240.2718417615. The cubic root of 2138162740 is about 1288.2898517261.

The spelling of 2138162740 in words is "two billion, one hundred thirty-eight million, one hundred sixty-two thousand, seven hundred forty".