2001761290 has 8 divisors (see below), whose sum is σ = 3603170340. Its totient is φ = 800704512.

The previous prime is 2001761273. The next prime is 2001761317. The reversal of 2001761290 is 921671002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1889380089 + 112381201 = 43467^2 + 10601^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100088055 + ... + 100088074.

Almost surely, 2^2001761290 is an apocalyptic number.

2001761290 is a deficient number, since it is larger than the sum of its proper divisors (1601409050).

2001761290 is a wasteful number, since it uses less digits than its factorization.

2001761290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200176136.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 2001761290 is about 44741.0470373683. The cubic root of 2001761290 is about 1260.2907891041.

The spelling of 2001761290 in words is "two billion, one million, seven hundred sixty-one thousand, two hundred ninety".