1681348915 has 8 divisors (see below), whose sum is σ = 2026430640. Its totient is φ = 1339204512.

The previous prime is 1681348913. The next prime is 1681348927. The reversal of 1681348915 is 5198431861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1681348915 - 2¹ = 1681348913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1681348913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733069 + ... + 735358.

It is an arithmetic number, because the mean of its divisors is an integer number (253303830).

Almost surely, 2^1681348915 is an apocalyptic number.

1681348915 is a deficient number, since it is larger than the sum of its proper divisors (345081725).

1681348915 is a wasteful number, since it uses less digits than its factorization.

1681348915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468661.

The product of its digits is 207360, while the sum is 46.

The square root of 1681348915 is about 41004.2548401992. The cubic root of 1681348915 is about 1189.1024739069.

The spelling of 1681348915 in words is "one billion, six hundred eighty-one million, three hundred forty-eight thousand, nine hundred fifteen".