1616978106 has 32 divisors (see below), whose sum is σ = 3676854720. Its totient is φ = 526457232.

The previous prime is 1616978059. The next prime is 1616978119. The reversal of 1616978106 is 6018796161.

It is a super-2 number, since 2×1616978106² = 5229236390566694472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345865 + ... + 350508.

It is an arithmetic number, because the mean of its divisors is an integer number (114901710).

Almost surely, 2^1616978106 is an apocalyptic number.

1616978106 is an abundant number, since it is smaller than the sum of its proper divisors (2059876614).

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

1616978106 is a wasteful number, since it uses less digits than its factorization.

1616978106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696427 (or 696421 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1616978106 is about 40211.6662922590. Note that the first 3 decimals coincide. The cubic root of 1616978106 is about 1173.7295714478.

The spelling of 1616978106 in words is "one billion, six hundred sixteen million, nine hundred seventy-eight thousand, one hundred six".