5401370638 has 4 divisors (see below), whose sum is σ = 8102055960. Its totient is φ = 2700685318.

The previous prime is 5401370633. The next prime is 5401370657. The reversal of 5401370638 is 8360731045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8360731045 = 5 ⋅1672146209.

It is a junction number, because it is equal to n+sod(n) for n = 5401370597 and 5401370606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5401370633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1350342658 + ... + 1350342661.

It is an arithmetic number, because the mean of its divisors is an integer number (2025513990).

Almost surely, 2^5401370638 is an apocalyptic number.

5401370638 is a deficient number, since it is larger than the sum of its proper divisors (2700685322).

5401370638 is a wasteful number, since it uses less digits than its factorization.

5401370638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700685321.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 5401370638 is about 73494.0177021232. The cubic root of 5401370638 is about 1754.5590662902.

The spelling of 5401370638 in words is "five billion, four hundred one million, three hundred seventy thousand, six hundred thirty-eight".