1994115213 has 16 divisors (see below), whose sum is σ = 2968254400. Its totient is φ = 1323105840.

The previous prime is 1994115209. The next prime is 1994115223. The reversal of 1994115213 is 3125114991.

1994115213 is a `hidden beast` number, since 1 + 99 + 41 + 1 + 521 + 3 = 666.

It is not a de Polignac number, because 1994115213 - 2² = 1994115209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994115223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169318 + ... + 180711.

It is an arithmetic number, because the mean of its divisors is an integer number (185515900).

Almost surely, 2^1994115213 is an apocalyptic number.

It is an amenable number.

1994115213 is a deficient number, since it is larger than the sum of its proper divisors (974139187).

1994115213 is a wasteful number, since it uses less digits than its factorization.

1994115213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350249 (or 350243 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 1994115213 is about 44655.5171619364. The cubic root of 1994115213 is about 1258.6841080747.

The spelling of 1994115213 in words is "one billion, nine hundred ninety-four million, one hundred fifteen thousand, two hundred thirteen".