1994617616 has 20 divisors (see below), whose sum is σ = 4091899932. Its totient is φ = 938643456.

The previous prime is 1994617609. The next prime is 1994617619. The reversal of 1994617616 is 6167164991.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1436713216 + 557904400 = 37904^2 + 23620^2 .

It is not an unprimeable number, because it can be changed into a prime (1994617619) 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, 3666305 + ... + 3666848.

Almost surely, 2^1994617616 is an apocalyptic number.

1994617616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1994617616 is an abundant number, since it is smaller than the sum of its proper divisors (2097282316).

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

1994617616 is a wasteful number, since it uses less digits than its factorization.

1994617616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333178 (or 7333172 counting only the distinct ones).

The product of its digits is 489888, while the sum is 50.

The square root of 1994617616 is about 44661.1421260138. The cubic root of 1994617616 is about 1258.7898046711.

The spelling of 1994617616 in words is "one billion, nine hundred ninety-four million, six hundred seventeen thousand, six hundred sixteen".