291653429138 has 8 divisors (see below), whose sum is σ = 440924869632. Its totient is φ = 144678472596.

The previous prime is 291653429131. The next prime is 291653429143. The reversal of 291653429138 is 831924356192.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 291653429138.

It is not an unprimeable number, because it can be changed into a prime (291653429131) 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, 574120670 + ... + 574121177.

It is an arithmetic number, because the mean of its divisors is an integer number (55115608704).

Almost surely, 2^291653429138 is an apocalyptic number.

291653429138 is a deficient number, since it is larger than the sum of its proper divisors (149271440494).

291653429138 is a wasteful number, since it uses less digits than its factorization.

291653429138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148241976.

The product of its digits is 2799360, while the sum is 53.

The spelling of 291653429138 in words is "two hundred ninety-one billion, six hundred fifty-three million, four hundred twenty-nine thousand, one hundred thirty-eight".