201913898 has 8 divisors (see below), whose sum is σ = 304440708. Its totient is φ = 100433664.

The previous prime is 201913891. The next prime is 201913903. The reversal of 201913898 is 898319102.

It can be written as a sum of positive squares in 2 ways, for example, as 198161929 + 3751969 = 14077^2 + 1937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201913891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261161 + ... + 261932.

Almost surely, 2^201913898 is an apocalyptic number.

201913898 is a deficient number, since it is larger than the sum of its proper divisors (102526810).

201913898 is a wasteful number, since it uses less digits than its factorization.

201913898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523288.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 201913898 is about 14209.6410229112. The cubic root of 201913898 is about 586.6630525919.

The spelling of 201913898 in words is "two hundred one million, nine hundred thirteen thousand, eight hundred ninety-eight".