1682151745 has 4 divisors (see below), whose sum is σ = 2018582100. Its totient is φ = 1345721392.

The previous prime is 1682151739. The next prime is 1682151749. The reversal of 1682151745 is 5471512861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5471512861 = 22679 ⋅241259.

It can be written as a sum of positive squares in 2 ways, for example, as 828518656 + 853633089 = 28784^2 + 29217^2 .

It is a cyclic number.

It is not a de Polignac number, because 1682151745 - 2¹³ = 1682143553 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1682151698 and 1682151707.

It is not an unprimeable number, because it can be changed into a prime (1682151749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168215170 + ... + 168215179.

It is an arithmetic number, because the mean of its divisors is an integer number (504645525).

Almost surely, 2^1682151745 is an apocalyptic number.

It is an amenable number.

1682151745 is a deficient number, since it is larger than the sum of its proper divisors (336430355).

1682151745 is an equidigital number, since it uses as much as digits as its factorization.

1682151745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336430354.

The product of its digits is 67200, while the sum is 40.

The square root of 1682151745 is about 41014.0432656913. The cubic root of 1682151745 is about 1189.2917059426.

The spelling of 1682151745 in words is "one billion, six hundred eighty-two million, one hundred fifty-one thousand, seven hundred forty-five".