994180549 has 4 divisors (see below), whose sum is σ = 1003472064. Its totient is φ = 984889036.

The previous prime is 994180541. The next prime is 994180609. The reversal of 994180549 is 945081499.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 994180549 - 2³ = 994180541 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 (994180541) 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, 4645597 + ... + 4645810.

It is an arithmetic number, because the mean of its divisors is an integer number (250868016).

Almost surely, 2^994180549 is an apocalyptic number.

It is an amenable number.

994180549 is a deficient number, since it is larger than the sum of its proper divisors (9291515).

994180549 is a wasteful number, since it uses less digits than its factorization.

994180549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9291514.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 994180549 is about 31530.6287441275. The cubic root of 994180549 is about 998.0564078971.

The spelling of 994180549 in words is "nine hundred ninety-four million, one hundred eighty thousand, five hundred forty-nine".