2249691643 has 2 divisors, whose sum is σ = 2249691644. Its totient is φ = 2249691642.

The previous prime is 2249691581. The next prime is 2249691683. The reversal of 2249691643 is 3461969422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2249691643 - 2¹³ = 2249683451 is a prime.

It is a super-2 number, since 2×2249691643² = 10122224977168078898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2249691593 and 2249691602.

It is not a weakly prime, because it can be changed into another prime (2249691683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1124845821 + 1124845822.

It is an arithmetic number, because the mean of its divisors is an integer number (1124845822).

Almost surely, 2^2249691643 is an apocalyptic number.

2249691643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2249691643 is an equidigital number, since it uses as much as digits as its factorization.

2249691643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 46.

The square root of 2249691643 is about 47430.9144229794. The cubic root of 2249691643 is about 1310.3108333360.

The spelling of 2249691643 in words is "two billion, two hundred forty-nine million, six hundred ninety-one thousand, six hundred forty-three".