2138544510 has 32 divisors (see below), whose sum is σ = 5190181920. Its totient is φ = 563870208.

The previous prime is 2138544497. The next prime is 2138544511. The reversal of 2138544510 is 154458312.

It is a super-2 number, since 2×2138544510² = 9146745242502280200, 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 (2138544511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397807 + ... + 403146.

It is an arithmetic number, because the mean of its divisors is an integer number (162193185).

Almost surely, 2^2138544510 is an apocalyptic number.

2138544510 is an abundant number, since it is smaller than the sum of its proper divisors (3051637410).

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

2138544510 is a wasteful number, since it uses less digits than its factorization.

2138544510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801052.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 2138544510 is about 46244.3997690531. The cubic root of 2138544510 is about 1288.3665220902.

The spelling of 2138544510 in words is "two billion, one hundred thirty-eight million, five hundred forty-four thousand, five hundred ten".