1673394768 has 160 divisors (see below), whose sum is σ = 4977062400. Its totient is φ = 537974784.

The previous prime is 1673394763. The next prime is 1673394817. The reversal of 1673394768 is 8674933761.

1673394768 is a `hidden beast` number, since 167 + 3 + 3 + 9 + 476 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673394763) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1481628 + ... + 1482756.

It is an arithmetic number, because the mean of its divisors is an integer number (31106640).

Almost surely, 2^1673394768 is an apocalyptic number.

1673394768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1673394768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2488531200).

1673394768 is an abundant number, since it is smaller than the sum of its proper divisors (3303667632).

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

1673394768 is a wasteful number, since it uses less digits than its factorization.

1673394768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266 (or 1254 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The square root of 1673394768 is about 40907.1481284139. The cubic root of 1673394768 is about 1187.2243687224.

The spelling of 1673394768 in words is "one billion, six hundred seventy-three million, three hundred ninety-four thousand, seven hundred sixty-eight".