2001657192 has 64 divisors (see below), whose sum is σ = 5042157120. Its totient is φ = 662174208.

The previous prime is 2001657127. The next prime is 2001657193. The reversal of 2001657192 is 2917561002.

It is not an unprimeable number, because it can be changed into a prime (2001657193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2335228 + ... + 2336084.

It is an arithmetic number, because the mean of its divisors is an integer number (78783705).

Almost surely, 2^2001657192 is an apocalyptic number.

It is an amenable number.

2001657192 is an abundant number, since it is smaller than the sum of its proper divisors (3040499928).

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

2001657192 is a wasteful number, since it uses less digits than its factorization.

2001657192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490 (or 1486 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 2001657192 is about 44739.8836833535. The cubic root of 2001657192 is about 1260.2689423392.

The spelling of 2001657192 in words is "two billion, one million, six hundred fifty-seven thousand, one hundred ninety-two".