1721451474 has 32 divisors (see below), whose sum is σ = 3863335680. Its totient is φ = 568134000.

The previous prime is 1721451451. The next prime is 1721451493. The reversal of 1721451474 is 4741541271.

1721451474 is a `hidden beast` number, since 1 + 72 + 1 + 4 + 514 + 74 = 666.

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, 152362 + ... + 163269.

It is an arithmetic number, because the mean of its divisors is an integer number (120729240).

Almost surely, 2^1721451474 is an apocalyptic number.

1721451474 is an abundant number, since it is smaller than the sum of its proper divisors (2141884206).

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

1721451474 is a wasteful number, since it uses less digits than its factorization.

1721451474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315743 (or 315737 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 1721451474 is about 41490.3780893836. The cubic root of 1721451474 is about 1198.4822185924.

The spelling of 1721451474 in words is "one billion, seven hundred twenty-one million, four hundred fifty-one thousand, four hundred seventy-four".