1982297129923 has 4 divisors (see below), whose sum is σ = 2162505959928. Its totient is φ = 1802088299920.

The previous prime is 1982297129903. The next prime is 1982297129941. The reversal of 1982297129923 is 3299217922891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1982297129923 - 2⁹ = 1982297129411 is a prime.

It is a super-2 number, since 2×1982297129923² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1982297129903) 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, 90104414986 + ... + 90104415007.

It is an arithmetic number, because the mean of its divisors is an integer number (540626489982).

Almost surely, 2^{1982297129923} is an apocalyptic number.

1982297129923 is a deficient number, since it is larger than the sum of its proper divisors (180208830005).

1982297129923 is a wasteful number, since it uses less digits than its factorization.

1982297129923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180208830004.

The product of its digits is 17635968, while the sum is 64.

The spelling of 1982297129923 in words is "one trillion, nine hundred eighty-two billion, two hundred ninety-seven million, one hundred twenty-nine thousand, nine hundred twenty-three".