1721292485 has 16 divisors (see below), whose sum is σ = 2278653120. Its totient is φ = 1237779840.

The previous prime is 1721292473. The next prime is 1721292499. The reversal of 1721292485 is 5842921271.

It is not a de Polignac number, because 1721292485 - 2⁸ = 1721292229 is a prime.

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, 170927 + ... + 180716.

It is an arithmetic number, because the mean of its divisors is an integer number (142415820).

Almost surely, 2^1721292485 is an apocalyptic number.

It is an amenable number.

1721292485 is a deficient number, since it is larger than the sum of its proper divisors (557360635).

1721292485 is a wasteful number, since it uses less digits than its factorization.

1721292485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351748.

The product of its digits is 80640, while the sum is 41.

The square root of 1721292485 is about 41488.4620707975. The cubic root of 1721292485 is about 1198.4453211720.

The spelling of 1721292485 in words is "one billion, seven hundred twenty-one million, two hundred ninety-two thousand, four hundred eighty-five".