1351979129 has 4 divisors (see below), whose sum is σ = 1352085120. Its totient is φ = 1351873140.

The previous prime is 1351979117. The next prime is 1351979137. The reversal of 1351979129 is 9219791531.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9219791531 = 1889 ⋅4880779.

It is a cyclic number.

It is not a de Polignac number, because 1351979129 - 2¹² = 1351975033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351979329) 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 in 3 ways as a sum of consecutive naturals, for example, 30749 + ... + 60410.

It is an arithmetic number, because the mean of its divisors is an integer number (338021280).

Almost surely, 2^1351979129 is an apocalyptic number.

It is an amenable number.

1351979129 is a deficient number, since it is larger than the sum of its proper divisors (105991).

1351979129 is an equidigital number, since it uses as much as digits as its factorization.

1351979129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105990.

The product of its digits is 153090, while the sum is 47.

The square root of 1351979129 is about 36769.2688124200. The cubic root of 1351979129 is about 1105.7492728121.

The spelling of 1351979129 in words is "one billion, three hundred fifty-one million, nine hundred seventy-nine thousand, one hundred twenty-nine".