163819898461 has 8 divisors (see below), whose sum is σ = 172454546880. Its totient is φ = 155186504928.

The previous prime is 163819898449. The next prime is 163819898467. The reversal of 163819898461 is 164898918361.

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

It is a cyclic number.

It is not a de Polignac number, because 163819898461 - 2⁹ = 163819897949 is a prime.

It is a super-3 number, since 3×163819898461³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163819898393 and 163819898402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163819898467) 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, 39601 + ... + 573766.

It is an arithmetic number, because the mean of its divisors is an integer number (21556818360).

Almost surely, 2^163819898461 is an apocalyptic number.

It is an amenable number.

163819898461 is a deficient number, since it is larger than the sum of its proper divisors (8634648419).

163819898461 is a wasteful number, since it uses less digits than its factorization.

163819898461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627443.

The product of its digits is 17915904, while the sum is 64.

The spelling of 163819898461 in words is "one hundred sixty-three billion, eight hundred nineteen million, eight hundred ninety-eight thousand, four hundred sixty-one".