102786283609 has 9 divisors (see below), whose sum is σ = 109193987487. Its totient is φ = 96734901984.

The previous prime is 102786283583. The next prime is 102786283667. The reversal of 102786283609 is 906382687201.

The square root of 102786283609 is 320603.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 80023923225 + 22762360384 = 282885^2 + 150872^2 .

It is not a de Polignac number, because 102786283609 - 2¹⁷ = 102786152537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102786283669) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5440822 + ... + 5459680.

Almost surely, 2^102786283609 is an apocalyptic number.

102786283609 is the 320603-rd square number.

102786283609 is the 160302-nd centered octagonal number.

It is an amenable number.

102786283609 is a deficient number, since it is larger than the sum of its proper divisors (6407703878).

102786283609 is an frugal number, since it uses more digits than its factorization.

102786283609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37752 (or 18876 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 102786283609 in words is "one hundred two billion, seven hundred eighty-six million, two hundred eighty-three thousand, six hundred nine".