2840969381 has 8 divisors (see below), whose sum is σ = 2872671360. Its totient is φ = 2809346832.

The previous prime is 2840969377. The next prime is 2840969413. The reversal of 2840969381 is 1839690482.

It is a happy number.

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 2840969381 - 2² = 2840969377 is a prime.

It is a super-2 number, since 2×2840969381² = 16142214047559046322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840969321) 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, 53576 + ... + 92478.

It is an arithmetic number, because the mean of its divisors is an integer number (359083920).

Almost surely, 2^2840969381 is an apocalyptic number.

It is an amenable number.

2840969381 is a deficient number, since it is larger than the sum of its proper divisors (31701979).

2840969381 is a wasteful number, since it uses less digits than its factorization.

2840969381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39715.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 2840969381 is about 53300.7446570871. The cubic root of 2840969381 is about 1416.3008561801.

The spelling of 2840969381 in words is "two billion, eight hundred forty million, nine hundred sixty-nine thousand, three hundred eighty-one".