1198993550 has 24 divisors (see below), whose sum is σ = 2233129392. Its totient is φ = 478952000.

The previous prime is 1198993531. The next prime is 1198993571. The reversal of 1198993550 is 553998911.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22295 + ... + 53805.

It is an arithmetic number, because the mean of its divisors is an integer number (93047058).

Almost surely, 2^1198993550 is an apocalyptic number.

1198993550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1198993550 is a deficient number, since it is larger than the sum of its proper divisors (1034135842).

1198993550 is a wasteful number, since it uses less digits than its factorization.

1198993550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32284 (or 32279 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 50.

The square root of 1198993550 is about 34626.4862496904. The cubic root of 1198993550 is about 1062.3613992217.

The spelling of 1198993550 in words is "one billion, one hundred ninety-eight million, nine hundred ninety-three thousand, five hundred fifty".