2101015898 has 8 divisors (see below), whose sum is σ = 3151821108. Its totient is φ = 1050408864.

The previous prime is 2101015897. The next prime is 2101015909. The reversal of 2101015898 is 8985101012.

It can be written as a sum of positive squares in 2 ways, for example, as 1727482969 + 373532929 = 41563^2 + 19327^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2101015897) 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, 19361 + ... + 67652.

Almost surely, 2^2101015898 is an apocalyptic number.

2101015898 is a deficient number, since it is larger than the sum of its proper divisors (1050805210).

2101015898 is a wasteful number, since it uses less digits than its factorization.

2101015898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99088.

The product of its (nonzero) digits is 5760, while the sum is 35.

The square root of 2101015898 is about 45836.8399652507. The cubic root of 2101015898 is about 1280.7856297634.

The spelling of 2101015898 in words is "two billion, one hundred one million, fifteen thousand, eight hundred ninety-eight".