5394021137 has 6 divisors (see below), whose sum is σ = 5729981238. Its totient is φ = 5076725504.

The previous prime is 5394021121. The next prime is 5394021161. The reversal of 5394021137 is 7311204935.

It is a Cunningham number, because it is equal to 73444²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1674119056 + 3719902081 = 40916^2 + 60991^2 .

It is not a de Polignac number, because 5394021137 - 2⁴ = 5394021121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5394021097 and 5394021106.

It is not an unprimeable number, because it can be changed into a prime (5394021337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9331928 + ... + 9332505.

It is an arithmetic number, because the mean of its divisors is an integer number (954996873).

Almost surely, 2^5394021137 is an apocalyptic number.

It is an amenable number.

5394021137 is a deficient number, since it is larger than the sum of its proper divisors (335960101).

5394021137 is a wasteful number, since it uses less digits than its factorization.

5394021137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18664467 (or 18664450 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 5394021137 is about 73444.0000068079. Note that the first 5 decimals coincide. The cubic root of 5394021137 is about 1753.7629111664.

The spelling of 5394021137 in words is "five billion, three hundred ninety-four million, twenty-one thousand, one hundred thirty-seven".