29518995890 has 32 divisors (see below), whose sum is σ = 55033318080. Its totient is φ = 11386561984.

The previous prime is 29518995841. The next prime is 29518995893. The reversal of 29518995890 is 9859981592.

It is a super-2 number, since 2×29518995890² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29518995893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178289 + ... + 301371.

It is an arithmetic number, because the mean of its divisors is an integer number (1719791190).

Almost surely, 2^29518995890 is an apocalyptic number.

29518995890 is a deficient number, since it is larger than the sum of its proper divisors (25514322190).

29518995890 is a wasteful number, since it uses less digits than its factorization.

29518995890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123946.

The product of its (nonzero) digits is 20995200, while the sum is 65.

The spelling of 29518995890 in words is "twenty-nine billion, five hundred eighteen million, nine hundred ninety-five thousand, eight hundred ninety".