1317198429 has 20 divisors (see below), whose sum is σ = 1970197020. Its totient is φ = 877003200.

The previous prime is 1317198413. The next prime is 1317198451. The reversal of 1317198429 is 9248917131.

1317198429 is a `hidden beast` number, since 1 + 31 + 7 + 198 + 429 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 830995929 + 486202500 = 28827^2 + 22050^2 .

It is not a de Polignac number, because 1317198429 - 2⁴ = 1317198413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317198479) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55479 + ... + 75579.

It is an arithmetic number, because the mean of its divisors is an integer number (98509851).

Almost surely, 2^1317198429 is an apocalyptic number.

It is an amenable number.

1317198429 is a deficient number, since it is larger than the sum of its proper divisors (652998591).

1317198429 is an equidigital number, since it uses as much as digits as its factorization.

1317198429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20922 (or 20913 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1317198429 is about 36293.2284179845. The cubic root of 1317198429 is about 1096.1846964051.

The spelling of 1317198429 in words is "one billion, three hundred seventeen million, one hundred ninety-eight thousand, four hundred twenty-nine".