1994552250 has 96 divisors (see below), whose sum is σ = 5066687808. Its totient is φ = 522536800.

The previous prime is 1994552243. The next prime is 1994552257. The reversal of 1994552250 is 522554991.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1994552243) and next prime (1994552257).

It is not an unprimeable number, because it can be changed into a prime (1994552257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11142661 + ... + 11142839.

It is an arithmetic number, because the mean of its divisors is an integer number (52777998).

Almost surely, 2^1994552250 is an apocalyptic number.

1994552250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1994552250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2533343904).

1994552250 is an abundant number, since it is smaller than the sum of its proper divisors (3072135558).

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

1994552250 is an equidigital number, since it uses as much as digits as its factorization.

1994552250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 1994552250 is about 44660.4103205512. The cubic root of 1994552250 is about 1258.7760538394.

The spelling of 1994552250 in words is "one billion, nine hundred ninety-four million, five hundred fifty-two thousand, two hundred fifty".