198652391488 has 14 divisors (see below), whose sum is σ = 394200839486. Its totient is φ = 99326195712.

The previous prime is 198652391459. The next prime is 198652391519. The reversal of 198652391488 is 884193256891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 127900647424 + 70751744064 = 357632^2 + 265992^2 .

It is a super-2 number, since 2×198652391488² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64), and also a Moran number because the ratio is a prime number: 3103943617 = 198652391488 / (1 + 9 + 8 + 6 + 5 + 2 + 3 + 9 + 1 + 4 + 8 + 8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1551971745 + ... + 1551971872.

Almost surely, 2^198652391488 is an apocalyptic number.

It is an amenable number.

198652391488 is a deficient number, since it is larger than the sum of its proper divisors (195548447998).

198652391488 is an equidigital number, since it uses as much as digits as its factorization.

198652391488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3103943629 (or 3103943619 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 64.

The spelling of 198652391488 in words is "one hundred ninety-eight billion, six hundred fifty-two million, three hundred ninety-one thousand, four hundred eighty-eight".