1616952077 has 4 divisors (see below), whose sum is σ = 1741333020. Its totient is φ = 1492571136.

The previous prime is 1616951983. The next prime is 1616952109. The reversal of 1616952077 is 7702596161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 243953161 + 1372998916 = 15619^2 + 37054^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616952077 - 2¹⁸ = 1616689933 is a prime.

It is a super-2 number, since 2×1616952077² = 5229068038629227858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616952277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62190452 + ... + 62190477.

It is an arithmetic number, because the mean of its divisors is an integer number (435333255).

Almost surely, 2^1616952077 is an apocalyptic number.

It is an amenable number.

1616952077 is a deficient number, since it is larger than the sum of its proper divisors (124380943).

1616952077 is a wasteful number, since it uses less digits than its factorization.

1616952077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124380942.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 1616952077 is about 40211.3426411007. The cubic root of 1616952077 is about 1173.7232734505.

The spelling of 1616952077 in words is "one billion, six hundred sixteen million, nine hundred fifty-two thousand, seventy-seven".