2021493898 has 16 divisors (see below), whose sum is σ = 3120115680. Its totient is φ = 981718416.

The previous prime is 2021493893. The next prime is 2021493899. The reversal of 2021493898 is 8983941202.

It is not an unprimeable number, because it can be changed into a prime (2021493893) 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, 50265 + ... + 81052.

It is an arithmetic number, because the mean of its divisors is an integer number (195007230).

Almost surely, 2^2021493898 is an apocalyptic number.

2021493898 is a deficient number, since it is larger than the sum of its proper divisors (1098621782).

2021493898 is a wasteful number, since it uses less digits than its factorization.

2021493898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131541.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 2021493898 is about 44961.0264340128. The cubic root of 2021493898 is about 1264.4184129446.

The spelling of 2021493898 in words is "two billion, twenty-one million, four hundred ninety-three thousand, eight hundred ninety-eight".