1616538097 has 8 divisors (see below), whose sum is σ = 1682937000. Its totient is φ = 1550849664.

The previous prime is 1616538073. The next prime is 1616538127. The reversal of 1616538097 is 7908356161.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 572214241 + 1044323856 = 23921^2 + 32316^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1616538097 - 2¹¹ = 1616536049 is a prime.

It is a super-2 number, since 2×1616538097² = 5226390838104762818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616538047) 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, 172972 + ... + 182077.

It is an arithmetic number, because the mean of its divisors is an integer number (210367125).

Almost surely, 2^1616538097 is an apocalyptic number.

It is an amenable number.

1616538097 is a deficient number, since it is larger than the sum of its proper divisors (66398903).

1616538097 is a wasteful number, since it uses less digits than its factorization.

1616538097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355235.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1616538097 is about 40206.1947590169. The cubic root of 1616538097 is about 1173.6230974381.

The spelling of 1616538097 in words is "one billion, six hundred sixteen million, five hundred thirty-eight thousand, ninety-seven".