1612584649 has 9 divisors (see below), whose sum is σ = 1746737013. Its totient is φ = 1488057792.

The previous prime is 1612584641. The next prime is 1612584661. The reversal of 1612584649 is 9464852161.

It is a happy number.

The square root of 1612584649 is 40157.

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

It can be written as a sum of positive squares in 4 ways, for example, as 18020025 + 1594564624 = 4245^2 + 39932^2 .

It is not a de Polignac number, because 1612584649 - 2³ = 1612584641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1612584599 and 1612584608.

It is not an unprimeable number, because it can be changed into a prime (1612584641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 520497 + ... + 523585.

Almost surely, 2^1612584649 is an apocalyptic number.

1612584649 is the 40157-th square number.

1612584649 is the 20079-th centered octagonal number.

It is an amenable number.

1612584649 is a deficient number, since it is larger than the sum of its proper divisors (134152364).

1612584649 is an frugal number, since it uses more digits than its factorization.

1612584649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204 (or 3102 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The cubic root of 1612584649 is about 1172.6655686103.

The spelling of 1612584649 in words is "one billion, six hundred twelve million, five hundred eighty-four thousand, six hundred forty-nine".