1616952078 has 64 divisors (see below), whose sum is σ = 4190400000. Its totient is φ = 461981016.

The previous prime is 1616951983. The next prime is 1616952109. The reversal of 1616952078 is 8702596161.

1616952078 is a `hidden beast` number, since 1 + 61 + 69 + 520 + 7 + 8 = 666.

It is a super-2 number, since 2×1616952078² = 5229068045097036168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 25128 + ... + 62171.

It is an arithmetic number, because the mean of its divisors is an integer number (65475000).

Almost surely, 2^1616952078 is an apocalyptic number.

1616952078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1616952078 is an abundant number, since it is smaller than the sum of its proper divisors (2573447922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1616952078 is an equidigital number, since it uses as much as digits as its factorization.

1616952078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87331 (or 87311 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 1616952078 is about 40211.3426535350. The cubic root of 1616952078 is about 1173.7232736925.

The spelling of 1616952078 in words is "one billion, six hundred sixteen million, nine hundred fifty-two thousand, seventy-eight".