2031761449 has 8 divisors (see below), whose sum is σ = 2075834880. Its totient is φ = 1987723296.

The previous prime is 2031761441. The next prime is 2031761453. The reversal of 2031761449 is 9441671302.

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

It is a cyclic number.

It is not a de Polignac number, because 2031761449 - 2³ = 2031761441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031761441) 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, 131472 + ... + 146110.

It is an arithmetic number, because the mean of its divisors is an integer number (259479360).

Almost surely, 2^2031761449 is an apocalyptic number.

It is an amenable number.

2031761449 is a deficient number, since it is larger than the sum of its proper divisors (44073431).

2031761449 is a wasteful number, since it uses less digits than its factorization.

2031761449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17639.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 2031761449 is about 45075.0646033924. The cubic root of 2031761449 is about 1266.5555390581. Note that the first 4 decimals are identical.

The spelling of 2031761449 in words is "two billion, thirty-one million, seven hundred sixty-one thousand, four hundred forty-nine".