6738494490 has 384 divisors, whose sum is σ = 23106650112. Its totient is φ = 1374485760.

The previous prime is 6738494461. The next prime is 6738494509. The reversal of 6738494490 is 944948376.

It is a happy number.

6738494490 is a `hidden beast` number, since 6 + 73 + 84 + 9 + 4 + 490 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6854539 + ... + 6855521.

It is an arithmetic number, because the mean of its divisors is an integer number (60173568).

Almost surely, 2^6738494490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6738494490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11553325056).

6738494490 is an abundant number, since it is smaller than the sum of its proper divisors (16368155622).

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

6738494490 is a wasteful number, since it uses less digits than its factorization.

6738494490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The square root of 6738494490 is about 82088.3334585372. Note that the first 3 decimals coincide. The cubic root of 6738494490 is about 1888.8071838566.

The spelling of 6738494490 in words is "six billion, seven hundred thirty-eight million, four hundred ninety-four thousand, four hundred ninety".