1681658495 has 16 divisors (see below), whose sum is σ = 2202242688. Its totient is φ = 1222580640.

The previous prime is 1681658453. The next prime is 1681658507. The reversal of 1681658495 is 5948561861.

It is a de Polignac number, because none of the positive numbers 2^k-1681658495 is a prime.

It is a Duffinian number.

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, 277892 + ... + 283878.

It is an arithmetic number, because the mean of its divisors is an integer number (137640168).

Almost surely, 2^1681658495 is an apocalyptic number.

1681658495 is a deficient number, since it is larger than the sum of its proper divisors (520584193).

1681658495 is a wasteful number, since it uses less digits than its factorization.

1681658495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110.

The product of its digits is 2073600, while the sum is 53.

The square root of 1681658495 is about 41008.0296405472. The cubic root of 1681658495 is about 1189.1754509769.

The spelling of 1681658495 in words is "one billion, six hundred eighty-one million, six hundred fifty-eight thousand, four hundred ninety-five".