1606615349 has 4 divisors (see below), whose sum is σ = 1608094464. Its totient is φ = 1605136236.

The previous prime is 1606615301. The next prime is 1606615391. The reversal of 1606615349 is 9435166061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606615349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606615649) 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, 737927 + ... + 740100.

It is an arithmetic number, because the mean of its divisors is an integer number (402023616).

Almost surely, 2^1606615349 is an apocalyptic number.

It is an amenable number.

1606615349 is a deficient number, since it is larger than the sum of its proper divisors (1479115).

1606615349 is a wasteful number, since it uses less digits than its factorization.

1606615349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479114.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 1606615349 is about 40082.6065644439. The cubic root of 1606615349 is about 1171.2168286069.

The spelling of 1606615349 in words is "one billion, six hundred six million, six hundred fifteen thousand, three hundred forty-nine".