1994452416 has 224 divisors, whose sum is σ = 6435912960. Its totient is φ = 600652800.

The previous prime is 1994452399. The next prime is 1994452433. The reversal of 1994452416 is 6142544991.

1994452416 is a `hidden beast` number, since 199 + 4 + 45 + 2 + 416 = 666.

It is an interprime number because it is at equal distance from previous prime (1994452399) and next prime (1994452433).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6025371 + ... + 6025701.

Almost surely, 2^1994452416 is an apocalyptic number.

1994452416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1994452416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3217956480).

1994452416 is an abundant number, since it is smaller than the sum of its proper divisors (4441460544).

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

1994452416 is a wasteful number, since it uses less digits than its factorization.

1994452416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 664 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 1994452416 is about 44659.2926052350. The cubic root of 1994452416 is about 1258.7550515075.

The spelling of 1994452416 in words is "one billion, nine hundred ninety-four million, four hundred fifty-two thousand, four hundred sixteen".