1921163029 has 8 divisors (see below), whose sum is σ = 1988088120. Its totient is φ = 1854283200.

The previous prime is 1921162961. The next prime is 1921163033. The reversal of 1921163029 is 9203611291.

It can be written as a sum of positive squares in 4 ways, for example, as 132296004 + 1788867025 = 11502^2 + 42295^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1921163029 - 2²⁷ = 1786945301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1921162985 and 1921163003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921163039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90799 + ... + 109939.

It is an arithmetic number, because the mean of its divisors is an integer number (248511015).

Almost surely, 2^1921163029 is an apocalyptic number.

It is an amenable number.

1921163029 is a deficient number, since it is larger than the sum of its proper divisors (66925091).

1921163029 is a wasteful number, since it uses less digits than its factorization.

1921163029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22631.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1921163029 is about 43831.0737833332. The cubic root of 1921163029 is about 1243.1439101649.

The spelling of 1921163029 in words is "one billion, nine hundred twenty-one million, one hundred sixty-three thousand, twenty-nine".