2673657378 has 144 divisors (see below), whose sum is σ = 6995177280. Its totient is φ = 722094912.

The previous prime is 2673657377. The next prime is 2673657419. The reversal of 2673657378 is 8737563762.

2673657378 is a `hidden beast` number, since 2 + 67 + 3 + 6 + 573 + 7 + 8 = 666.

2673657378 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2673657377) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16402725 + ... + 16402887.

It is an arithmetic number, because the mean of its divisors is an integer number (48577620).

Almost surely, 2^2673657378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2673657378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3497588640).

2673657378 is an abundant number, since it is smaller than the sum of its proper divisors (4321519902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2673657378 is a wasteful number, since it uses less digits than its factorization.

2673657378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 271 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 54.

The square root of 2673657378 is about 51707.4209180849. The cubic root of 2673657378 is about 1387.9332634768.

The spelling of 2673657378 in words is "two billion, six hundred seventy-three million, six hundred fifty-seven thousand, three hundred seventy-eight".