1631068429 has 4 divisors (see below), whose sum is σ = 1632409884. Its totient is φ = 1629726976.

The previous prime is 1631068421. The next prime is 1631068457. The reversal of 1631068429 is 9248601361.

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 936482404 + 694586025 = 30602^2 + 26355^2 .

It is a cyclic number.

It is not a de Polignac number, because 1631068429 - 2³ = 1631068421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1631068391 and 1631068400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631068421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668902 + ... + 671335.

It is an arithmetic number, because the mean of its divisors is an integer number (408102471).

Almost surely, 2^1631068429 is an apocalyptic number.

It is an amenable number.

1631068429 is a deficient number, since it is larger than the sum of its proper divisors (1341455).

1631068429 is a wasteful number, since it uses less digits than its factorization.

1631068429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341454.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1631068429 is about 40386.4881984062. The cubic root of 1631068429 is about 1177.1290035881.

The spelling of 1631068429 in words is "one billion, six hundred thirty-one million, sixty-eight thousand, four hundred twenty-nine".