1029802381 has 4 divisors (see below), whose sum is σ = 1030783264. Its totient is φ = 1028821500.

The previous prime is 1029802379. The next prime is 1029802393. The reversal of 1029802381 is 1832089201.

1029802381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 1029802381 - 2¹ = 1029802379 is a prime.

It is a super-2 number, since 2×1029802381² = 2120985887826538322, 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 (1029802321) 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, 488865 + ... + 490966.

It is an arithmetic number, because the mean of its divisors is an integer number (257695816).

Almost surely, 2^1029802381 is an apocalyptic number.

It is an amenable number.

1029802381 is a deficient number, since it is larger than the sum of its proper divisors (980883).

1029802381 is an equidigital number, since it uses as much as digits as its factorization.

1029802381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980882.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1029802381 is about 32090.5341339156. The cubic root of 1029802381 is about 1009.8370422972.

The spelling of 1029802381 in words is "one billion, twenty-nine million, eight hundred two thousand, three hundred eighty-one".