1682815157 has 2 divisors, whose sum is σ = 1682815158. Its totient is φ = 1682815156.

The previous prime is 1682815117. The next prime is 1682815163. The reversal of 1682815157 is 7515182861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1580380516 + 102434641 = 39754^2 + 10121^2 .

It is a cyclic number.

It is not a de Polignac number, because 1682815157 - 2¹⁴ = 1682798773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1682815117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841407578 + 841407579.

It is an arithmetic number, because the mean of its divisors is an integer number (841407579).

Almost surely, 2^1682815157 is an apocalyptic number.

It is an amenable number.

1682815157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1682815157 is an equidigital number, since it uses as much as digits as its factorization.

1682815157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 44.

The square root of 1682815157 is about 41022.1300885266. The cubic root of 1682815157 is about 1189.4480308586.

The spelling of 1682815157 in words is "one billion, six hundred eighty-two million, eight hundred fifteen thousand, one hundred fifty-seven".