2138519345 has 16 divisors (see below), whose sum is σ = 2669887488. Its totient is φ = 1642576320.

The previous prime is 2138519329. The next prime is 2138519347. The reversal of 2138519345 is 5439158312.

It is not a de Polignac number, because 2138519345 - 2⁴ = 2138519329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138519347) 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, 34634 + ... + 74003.

It is an arithmetic number, because the mean of its divisors is an integer number (166867968).

Almost surely, 2^2138519345 is an apocalyptic number.

It is an amenable number.

2138519345 is a deficient number, since it is larger than the sum of its proper divisors (531368143).

2138519345 is a wasteful number, since it uses less digits than its factorization.

2138519345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108800.

The product of its digits is 129600, while the sum is 41.

The square root of 2138519345 is about 46244.1276812527. The cubic root of 2138519345 is about 1288.3614685174.

The spelling of 2138519345 in words is "two billion, one hundred thirty-eight million, five hundred nineteen thousand, three hundred forty-five".