2261494619 has 4 divisors (see below), whose sum is σ = 2359820496. Its totient is φ = 2163168744.

The previous prime is 2261494607. The next prime is 2261494621. The reversal of 2261494619 is 9164941622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9164941622 = 2 ⋅4582470811.

It is a cyclic number.

It is not a de Polignac number, because 2261494619 - 2¹⁶ = 2261429083 is a prime.

It is a super-2 number, since 2×2261494619² = 10228715823531910322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2261494619.

It is not an unprimeable number, because it can be changed into a prime (2261494639) 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, 49162904 + ... + 49162949.

It is an arithmetic number, because the mean of its divisors is an integer number (589955124).

Almost surely, 2^2261494619 is an apocalyptic number.

2261494619 is a deficient number, since it is larger than the sum of its proper divisors (98325877).

2261494619 is an equidigital number, since it uses as much as digits as its factorization.

2261494619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98325876.

The product of its digits is 186624, while the sum is 44.

The square root of 2261494619 is about 47555.1744713443. The cubic root of 2261494619 is about 1312.5983467228.

The spelling of 2261494619 in words is "two billion, two hundred sixty-one million, four hundred ninety-four thousand, six hundred nineteen".