198377290 has 16 divisors (see below), whose sum is σ = 375873120. Its totient is φ = 75174480.

The previous prime is 198377269. The next prime is 198377299. The reversal of 198377290 is 92773891.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 198377290.

It is not an unprimeable number, because it can be changed into a prime (198377299) 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, 521856 + ... + 522235.

It is an arithmetic number, because the mean of its divisors is an integer number (23492070).

Almost surely, 2^198377290 is an apocalyptic number.

198377290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198377290 is a deficient number, since it is larger than the sum of its proper divisors (177495830).

198377290 is a wasteful number, since it uses less digits than its factorization.

198377290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044117.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 198377290 is about 14084.6473154282. The cubic root of 198377290 is about 583.2176398223.

The spelling of 198377290 in words is "one hundred ninety-eight million, three hundred seventy-seven thousand, two hundred ninety".