198694730 has 16 divisors (see below), whose sum is σ = 385162344. Its totient is φ = 73364160.

The previous prime is 198694687. The next prime is 198694753. The reversal of 198694730 is 37496891.

It can be written as a sum of positive squares in 4 ways, for example, as 88717561 + 109977169 = 9419^2 + 10487^2 .

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, 764081 + ... + 764340.

Almost surely, 2^198694730 is an apocalyptic number.

198694730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198694730 is a deficient number, since it is larger than the sum of its proper divisors (186467614).

198694730 is a wasteful number, since it uses less digits than its factorization.

198694730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528441.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 198694730 is about 14095.9118186799. The cubic root of 198694730 is about 583.5285590551.

The spelling of 198694730 in words is "one hundred ninety-eight million, six hundred ninety-four thousand, seven hundred thirty".