1994252278 has 8 divisors (see below), whose sum is σ = 2996047080. Its totient is φ = 995569920.

The previous prime is 1994252263. The next prime is 1994252279. The reversal of 1994252278 is 8722524991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994252279) 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, 776508 + ... + 779071.

It is an arithmetic number, because the mean of its divisors is an integer number (374505885).

Almost surely, 2^1994252278 is an apocalyptic number.

1994252278 is a deficient number, since it is larger than the sum of its proper divisors (1001794802).

1994252278 is a wasteful number, since it uses less digits than its factorization.

1994252278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556222.

The product of its digits is 725760, while the sum is 49.

The square root of 1994252278 is about 44657.0518283507. The cubic root of 1994252278 is about 1258.7129458576.

The spelling of 1994252278 in words is "one billion, nine hundred ninety-four million, two hundred fifty-two thousand, two hundred seventy-eight".