1198620885 has 32 divisors (see below), whose sum is σ = 2391017472. Its totient is φ = 498127680.

The previous prime is 1198620881. The next prime is 1198620889. The reversal of 1198620885 is 5880268911.

It is an interprime number because it is at equal distance from previous prime (1198620881) and next prime (1198620889).

It is not a de Polignac number, because 1198620885 - 2² = 1198620881 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198620881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 517729 + ... + 520038.

It is an arithmetic number, because the mean of its divisors is an integer number (74719296).

Almost surely, 2^1198620885 is an apocalyptic number.

1198620885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1198620885 is a deficient number, since it is larger than the sum of its proper divisors (1192396587).

1198620885 is a wasteful number, since it uses less digits than its factorization.

1198620885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037793.

The product of its (nonzero) digits is 276480, while the sum is 48.

The square root of 1198620885 is about 34621.1046184260. The cubic root of 1198620885 is about 1062.2513219168.

The spelling of 1198620885 in words is "one billion, one hundred ninety-eight million, six hundred twenty thousand, eight hundred eighty-five".