198214690 has 16 divisors (see below), whose sum is σ = 372299328. Its totient is φ = 75838576.

The previous prime is 198214657. The next prime is 198214699. The reversal of 198214690 is 96412891.

It is a super-2 number, since 2×198214690² = 78578126663592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198214699) 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, 430672 + ... + 431131.

It is an arithmetic number, because the mean of its divisors is an integer number (23268708).

Almost surely, 2^198214690 is an apocalyptic number.

198214690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198214690 is a deficient number, since it is larger than the sum of its proper divisors (174084638).

198214690 is a wasteful number, since it uses less digits than its factorization.

198214690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861833.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 198214690 is about 14078.8738896263. The cubic root of 198214690 is about 583.0582514341.

The spelling of 198214690 in words is "one hundred ninety-eight million, two hundred fourteen thousand, six hundred ninety".