198947753 has 8 divisors (see below), whose sum is σ = 210859272. Its totient is φ = 187059456.

The previous prime is 198947741. The next prime is 198947767. The reversal of 198947753 is 357749891.

It can be written as a sum of positive squares in 4 ways, for example, as 28697449 + 170250304 = 5357^2 + 13048^2 .

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 198947753 - 2¹⁶ = 198882217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198947695 and 198947704.

It is not an unprimeable number, because it can be changed into a prime (198947653) 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, 13751 + ... + 24227.

It is an arithmetic number, because the mean of its divisors is an integer number (26357409).

Almost surely, 2^198947753 is an apocalyptic number.

It is an amenable number.

198947753 is a deficient number, since it is larger than the sum of its proper divisors (11911519).

198947753 is a wasteful number, since it uses less digits than its factorization.

198947753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11611.

The product of its digits is 1905120, while the sum is 53.

The square root of 198947753 is about 14104.8840122845. The cubic root of 198947753 is about 583.7761474348.

The spelling of 198947753 in words is "one hundred ninety-eight million, nine hundred forty-seven thousand, seven hundred fifty-three".