994181145 has 16 divisors (see below), whose sum is σ = 1594963392. Its totient is φ = 528805440.

The previous prime is 994181101. The next prime is 994181147. The reversal of 994181145 is 541181499.

It is not a de Polignac number, because 994181145 - 2¹¹ = 994179097 is a prime.

It is a super-2 number, since 2×994181145² = 1976792298147022050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 994181097 and 994181106.

It is not an unprimeable number, because it can be changed into a prime (994181147) 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, 83251 + ... + 94440.

It is an arithmetic number, because the mean of its divisors is an integer number (99685212).

Almost surely, 2^994181145 is an apocalyptic number.

It is an amenable number.

994181145 is a deficient number, since it is larger than the sum of its proper divisors (600782247).

994181145 is a wasteful number, since it uses less digits than its factorization.

994181145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178072.

The product of its digits is 51840, while the sum is 42.

The square root of 994181145 is about 31530.6381952538. The cubic root of 994181145 is about 998.0566073382.

The spelling of 994181145 in words is "nine hundred ninety-four million, one hundred eighty-one thousand, one hundred forty-five".