1681364895 has 16 divisors (see below), whose sum is σ = 3074496000. Its totient is φ = 768623904.

The previous prime is 1681364879. The next prime is 1681364903. The reversal of 1681364895 is 5984631861.

It is not a de Polignac number, because 1681364895 - 2⁴ = 1681364879 is a prime.

It is a super-2 number, since 2×1681364895² = 5653975820276722050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8006395 + ... + 8006604.

It is an arithmetic number, because the mean of its divisors is an integer number (192156000).

Almost surely, 2^1681364895 is an apocalyptic number.

1681364895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1681364895 is a deficient number, since it is larger than the sum of its proper divisors (1393131105).

1681364895 is a wasteful number, since it uses less digits than its factorization.

1681364895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16013014.

The product of its digits is 1244160, while the sum is 51.

The square root of 1681364895 is about 41004.4496975633. The cubic root of 1681364895 is about 1189.1062410800.

The spelling of 1681364895 in words is "one billion, six hundred eighty-one million, three hundred sixty-four thousand, eight hundred ninety-five".