6434736157 has 4 divisors (see below), whose sum is σ = 6435002560. Its totient is φ = 6434469756.

The previous prime is 6434736131. The next prime is 6434736199. The reversal of 6434736157 is 7516374346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6434736157 - 2¹⁵ = 6434703389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6434736127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92907 + ... + 146632.

It is an arithmetic number, because the mean of its divisors is an integer number (1608750640).

Almost surely, 2^6434736157 is an apocalyptic number.

It is an amenable number.

6434736157 is a deficient number, since it is larger than the sum of its proper divisors (266403).

6434736157 is a wasteful number, since it uses less digits than its factorization.

6434736157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266402.

The product of its digits is 1270080, while the sum is 46.

The square root of 6434736157 is about 80216.8071977438. The cubic root of 6434736157 is about 1859.9884530250.

The spelling of 6434736157 in words is "six billion, four hundred thirty-four million, seven hundred thirty-six thousand, one hundred fifty-seven".