1994046172 has 6 divisors (see below), whose sum is σ = 3489580808. Its totient is φ = 997023084.

The previous prime is 1994046137. The next prime is 1994046179. The reversal of 1994046172 is 2716404991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994046179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249255768 + ... + 249255775.

Almost surely, 2^1994046172 is an apocalyptic number.

It is an amenable number.

1994046172 is a deficient number, since it is larger than the sum of its proper divisors (1495534636).

1994046172 is a wasteful number, since it uses less digits than its factorization.

1994046172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498511547 (or 498511545 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1994046172 is about 44654.7441152673. The cubic root of 1994046172 is about 1258.6695816970.

The spelling of 1994046172 in words is "one billion, nine hundred ninety-four million, forty-six thousand, one hundred seventy-two".