53818937949 has 8 divisors (see below), whose sum is σ = 82009810240. Its totient is φ = 30753678816.

The previous prime is 53818937947. The next prime is 53818937959. The reversal of 53818937949 is 94973981835.

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

It is not a de Polignac number, because 53818937949 - 2¹ = 53818937947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53818937949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53818937947) 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, 1281403264 + ... + 1281403305.

It is an arithmetic number, because the mean of its divisors is an integer number (10251226280).

Almost surely, 2^53818937949 is an apocalyptic number.

It is an amenable number.

53818937949 is a deficient number, since it is larger than the sum of its proper divisors (28190872291).

53818937949 is a wasteful number, since it uses less digits than its factorization.

53818937949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562806579.

The product of its digits is 58786560, while the sum is 66.

The spelling of 53818937949 in words is "fifty-three billion, eight hundred eighteen million, nine hundred thirty-seven thousand, nine hundred forty-nine".