1616601061 has 2 divisors, whose sum is σ = 1616601062. Its totient is φ = 1616601060.

The previous prime is 1616600983. The next prime is 1616601067. The reversal of 1616601061 is 1601066161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1367150625 + 249450436 = 36975^2 + 15794^2 .

It is an emirp because it is prime and its reverse (1601066161) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1901099191 and 1919901091.

It is a cyclic number.

It is not a de Polignac number, because 1616601061 - 2²³ = 1608212453 is a prime.

It is a super-2 number, since 2×1616601061² = 5226797980852651442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1616601067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808300530 + 808300531.

It is an arithmetic number, because the mean of its divisors is an integer number (808300531).

Almost surely, 2^1616601061 is an apocalyptic number.

It is an amenable number.

1616601061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616601061 is an equidigital number, since it uses as much as digits as its factorization.

1616601061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1616601061 is about 40206.9777650596. The cubic root of 1616601061 is about 1173.6383347417.

The spelling of 1616601061 in words is "one billion, six hundred sixteen million, six hundred one thousand, sixty-one".