2669819649 has 8 divisors (see below), whose sum is σ = 4068296640. Its totient is φ = 1525611216.

The previous prime is 2669819623. The next prime is 2669819653. The reversal of 2669819649 is 9469189662.

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

It is not a de Polignac number, because 2669819649 - 2⁷ = 2669819521 is a prime.

It is a super-4 number, since 4×2669819649⁴ (a number of 39 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2669819592 and 2669819601.

It is not an unprimeable number, because it can be changed into a prime (2669819609) 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, 63567114 + ... + 63567155.

It is an arithmetic number, because the mean of its divisors is an integer number (508537080).

Almost surely, 2^2669819649 is an apocalyptic number.

It is an amenable number.

2669819649 is a deficient number, since it is larger than the sum of its proper divisors (1398476991).

2669819649 is a wasteful number, since it uses less digits than its factorization.

2669819649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127134279.

The product of its digits is 10077696, while the sum is 60.

The square root of 2669819649 is about 51670.2975509141. The cubic root of 2669819649 is about 1387.2688724014.

The spelling of 2669819649 in words is "two billion, six hundred sixty-nine million, eight hundred nineteen thousand, six hundred forty-nine".