1616116501 has 4 divisors (see below), whose sum is σ = 1616713600. Its totient is φ = 1615519404.

The previous prime is 1616116499. The next prime is 1616116517. The reversal of 1616116501 is 1056116161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1056116161 = 79 ⋅13368559.

It is a cyclic number.

It is not a de Polignac number, because 1616116501 - 2¹ = 1616116499 is a prime.

It is a super-2 number, since 2×1616116501² = 5223665089608966002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1616116501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616116531) 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, 294471 + ... + 299908.

It is an arithmetic number, because the mean of its divisors is an integer number (404178400).

Almost surely, 2^1616116501 is an apocalyptic number.

It is an amenable number.

1616116501 is a deficient number, since it is larger than the sum of its proper divisors (597099).

1616116501 is an equidigital number, since it uses as much as digits as its factorization.

1616116501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597098.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 1616116501 is about 40200.9514937147. The cubic root of 1616116501 is about 1173.5210609061.

The spelling of 1616116501 in words is "one billion, six hundred sixteen million, one hundred sixteen thousand, five hundred one".