1716429157 has 4 divisors (see below), whose sum is σ = 1817395596. Its totient is φ = 1615462720.

The previous prime is 1716429137. The next prime is 1716429161. The reversal of 1716429157 is 7519246171.

It is a happy number.

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 1578155076 + 138274081 = 39726^2 + 11759^2 .

It is a cyclic number.

It is not a de Polignac number, because 1716429157 - 2²⁷ = 1582211429 is a prime.

It is a super-2 number, since 2×1716429157² = 5892258101999461298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1716429137) 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, 50483194 + ... + 50483227.

It is an arithmetic number, because the mean of its divisors is an integer number (454348899).

Almost surely, 2^1716429157 is an apocalyptic number.

1716429157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1716429157 is a deficient number, since it is larger than the sum of its proper divisors (100966439).

1716429157 is a wasteful number, since it uses less digits than its factorization.

1716429157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100966438.

The product of its digits is 105840, while the sum is 43.

The square root of 1716429157 is about 41429.8100043918. The cubic root of 1716429157 is about 1197.3155634319.

The spelling of 1716429157 in words is "one billion, seven hundred sixteen million, four hundred twenty-nine thousand, one hundred fifty-seven".