1680734454 has 32 divisors (see below), whose sum is σ = 3871017216. Its totient is φ = 476542560.

The previous prime is 1680734449. The next prime is 1680734483. The reversal of 1680734454 is 4544370861.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147237 + ... + 158240.

It is an arithmetic number, because the mean of its divisors is an integer number (120969288).

Almost surely, 2^1680734454 is an apocalyptic number.

1680734454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1680734454 is an abundant number, since it is smaller than the sum of its proper divisors (2190282762).

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

1680734454 is a wasteful number, since it uses less digits than its factorization.

1680734454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305620.

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 1680734454 is about 40996.7615062458. The cubic root of 1680734454 is about 1188.9576009193.

The spelling of 1680734454 in words is "one billion, six hundred eighty million, seven hundred thirty-four thousand, four hundred fifty-four".