2021191952 has 40 divisors (see below), whose sum is σ = 4315390464. Its totient is φ = 911159424.

The previous prime is 2021191903. The next prime is 2021191981. The reversal of 2021191952 is 2591911202.

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, 104048 + ... + 121935.

Almost surely, 2^2021191952 is an apocalyptic number.

It is an amenable number.

2021191952 is an abundant number, since it is smaller than the sum of its proper divisors (2294198512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021191952 is a wasteful number, since it uses less digits than its factorization.

2021191952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226047 (or 226041 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 2021191952 is about 44957.6684448827. The cubic root of 2021191952 is about 1264.3554553644.

The spelling of 2021191952 in words is "two billion, twenty-one million, one hundred ninety-one thousand, nine hundred fifty-two".