1721372982 has 32 divisors (see below), whose sum is σ = 4141651200. Its totient is φ = 465935328.

The previous prime is 1721372951. The next prime is 1721373013. The reversal of 1721372982 is 2892731271.

It is an interprime number because it is at equal distance from previous prime (1721372951) and next prime (1721373013).

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, 1077757 + ... + 1079352.

It is an arithmetic number, because the mean of its divisors is an integer number (129426600).

Almost surely, 2^1721372982 is an apocalyptic number.

1721372982 is an abundant number, since it is smaller than the sum of its proper divisors (2420278218).

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

1721372982 is a wasteful number, since it uses less digits than its factorization.

1721372982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157140.

The product of its digits is 84672, while the sum is 42.

The square root of 1721372982 is about 41489.4321725424. The cubic root of 1721372982 is about 1198.4640028216.

The spelling of 1721372982 in words is "one billion, seven hundred twenty-one million, three hundred seventy-two thousand, nine hundred eighty-two".