2861601619 has 4 divisors (see below), whose sum is σ = 3029931144. Its totient is φ = 2693272096.

The previous prime is 2861601583. The next prime is 2861601641. The reversal of 2861601619 is 9161061682.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2861601619 - 2¹¹ = 2861599571 is a prime.

It is a super-2 number, since 2×2861601619² = 16377527651726842322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2861601689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84164737 + ... + 84164770.

It is an arithmetic number, because the mean of its divisors is an integer number (757482786).

Almost surely, 2^2861601619 is an apocalyptic number.

2861601619 is a deficient number, since it is larger than the sum of its proper divisors (168329525).

2861601619 is a wasteful number, since it uses less digits than its factorization.

2861601619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168329524.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 2861601619 is about 53493.9400212772. The cubic root of 2861601619 is about 1419.7211677276.

The spelling of 2861601619 in words is "two billion, eight hundred sixty-one million, six hundred one thousand, six hundred nineteen".