5426431636 has 6 divisors (see below), whose sum is σ = 9496255370. Its totient is φ = 2713215816.

The previous prime is 5426431609. The next prime is 5426431651. The reversal of 5426431636 is 6361346245.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5423438736 + 2992900 = 73644^2 + 1730^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678303951 + ... + 678303958.

Almost surely, 2^5426431636 is an apocalyptic number.

It is an amenable number.

5426431636 is a deficient number, since it is larger than the sum of its proper divisors (4069823734).

5426431636 is a wasteful number, since it uses less digits than its factorization.

5426431636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356607913 (or 1356607911 counting only the distinct ones).

The product of its digits is 311040, while the sum is 40.

The square root of 5426431636 is about 73664.3172506201. The cubic root of 5426431636 is about 1757.2684508864.

The spelling of 5426431636 in words is "five billion, four hundred twenty-six million, four hundred thirty-one thousand, six hundred thirty-six".