1516657349 has 8 divisors (see below), whose sum is σ = 1596998880. Its totient is φ = 1436367600.

The previous prime is 1516657339. The next prime is 1516657357. The reversal of 1516657349 is 9437566151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1516657349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516657339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56894 + ... + 79184.

It is an arithmetic number, because the mean of its divisors is an integer number (199624860).

Almost surely, 2^1516657349 is an apocalyptic number.

1516657349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1516657349 is a deficient number, since it is larger than the sum of its proper divisors (80341531).

1516657349 is a wasteful number, since it uses less digits than its factorization.

1516657349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25891.

The product of its digits is 680400, while the sum is 47.

The square root of 1516657349 is about 38944.2851905129. The cubic root of 1516657349 is about 1148.9359657775.

The spelling of 1516657349 in words is "one billion, five hundred sixteen million, six hundred fifty-seven thousand, three hundred forty-nine".