2136154838 has 8 divisors (see below), whose sum is σ = 3372876120. Its totient is φ = 1011862800.

The previous prime is 2136154829. The next prime is 2136154843. The reversal of 2136154838 is 8384516312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2136154795 and 2136154804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28107263 + ... + 28107338.

It is an arithmetic number, because the mean of its divisors is an integer number (421609515).

Almost surely, 2^2136154838 is an apocalyptic number.

2136154838 is a deficient number, since it is larger than the sum of its proper divisors (1236721282).

2136154838 is a wasteful number, since it uses less digits than its factorization.

2136154838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56214622.

The product of its digits is 138240, while the sum is 41.

The square root of 2136154838 is about 46218.5551267021. Note that the first 3 decimals coincide. The cubic root of 2136154838 is about 1287.8864571251.

The spelling of 2136154838 in words is "two billion, one hundred thirty-six million, one hundred fifty-four thousand, eight hundred thirty-eight".