1200390198 has 16 divisors (see below), whose sum is σ = 2743749120. Its totient is φ = 342968616.

The previous prime is 1200390187. The next prime is 1200390211. The reversal of 1200390198 is 8910930021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14290318 + ... + 14290401.

It is an arithmetic number, because the mean of its divisors is an integer number (171484320).

Almost surely, 2^1200390198 is an apocalyptic number.

1200390198 is an abundant number, since it is smaller than the sum of its proper divisors (1543358922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1200390198 is a wasteful number, since it uses less digits than its factorization.

1200390198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28580731.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1200390198 is about 34646.6477166262. The cubic root of 1200390198 is about 1062.7737364919.

It can be divided in two parts, 12003 and 90198, that added together give a palindrome (102201).

The spelling of 1200390198 in words is "one billion, two hundred million, three hundred ninety thousand, one hundred ninety-eight".