5138140837 has 4 divisors (see below), whose sum is σ = 5222372716. Its totient is φ = 5053908960.

The previous prime is 5138140831. The next prime is 5138140841. The reversal of 5138140837 is 7380418315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1544018436 + 3594122401 = 39294^2 + 59951^2 .

It is a cyclic number.

It is not a de Polignac number, because 5138140837 - 2²⁷ = 5003923109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5138140837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5138140831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42115848 + ... + 42115969.

It is an arithmetic number, because the mean of its divisors is an integer number (1305593179).

Almost surely, 2^5138140837 is an apocalyptic number.

It is an amenable number.

5138140837 is a deficient number, since it is larger than the sum of its proper divisors (84231879).

5138140837 is an equidigital number, since it uses as much as digits as its factorization.

5138140837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84231878.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 5138140837 is about 71680.8261461878. The cubic root of 5138140837 is about 1725.5809384914.

The spelling of 5138140837 in words is "five billion, one hundred thirty-eight million, one hundred forty thousand, eight hundred thirty-seven".