1994147067 has 16 divisors (see below), whose sum is σ = 2962294272. Its totient is φ = 1182858720.

The previous prime is 1994147041. The next prime is 1994147087. The reversal of 1994147067 is 7607414991.

It is not a de Polignac number, because 1994147067 - 2⁷ = 1994146939 is a prime.

It is a super-3 number, since 3×1994147067³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1994147017) 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 15 ways as a sum of consecutive naturals, for example, 641308 + ... + 644409.

It is an arithmetic number, because the mean of its divisors is an integer number (185143392).

Almost surely, 2^1994147067 is an apocalyptic number.

1994147067 is a deficient number, since it is larger than the sum of its proper divisors (968147205).

1994147067 is a wasteful number, since it uses less digits than its factorization.

1994147067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285778.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1994147067 is about 44655.8738241679. The cubic root of 1994147067 is about 1258.6908101131.

The spelling of 1994147067 in words is "one billion, nine hundred ninety-four million, one hundred forty-seven thousand, sixty-seven".