1612509489 has 6 divisors (see below), whose sum is σ = 2329180386. Its totient is φ = 1075006320.

The previous prime is 1612509487. The next prime is 1612509497. The reversal of 1612509489 is 9849052161.

1612509489 is a `hidden beast` number, since 1 + 61 + 2 + 509 + 4 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1588421025 + 24088464 = 39855^2 + 4908^2 .

It is not a de Polignac number, because 1612509489 - 2¹ = 1612509487 is a prime.

It is a super-2 number, since 2×1612509489² = 5200373704230082242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1612509487) 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 5 ways as a sum of consecutive naturals, for example, 89583852 + ... + 89583869.

It is an arithmetic number, because the mean of its divisors is an integer number (388196731).

Almost surely, 2^1612509489 is an apocalyptic number.

It is an amenable number.

1612509489 is a deficient number, since it is larger than the sum of its proper divisors (716670897).

1612509489 is a wasteful number, since it uses less digits than its factorization.

1612509489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179167727 (or 179167724 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 1612509489 is about 40156.0641622159. The cubic root of 1612509489 is about 1172.6473496363.

The spelling of 1612509489 in words is "one billion, six hundred twelve million, five hundred nine thousand, four hundred eighty-nine".