73851994 has 4 divisors (see below), whose sum is σ = 110777994. Its totient is φ = 36925996.

The previous prime is 73851991. The next prime is 73851997. The reversal of 73851994 is 49915837.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49915837 = 3221 ⋅15497.

It is an interprime number because it is at equal distance from previous prime (73851991) and next prime (73851997).

It can be written as a sum of positive squares in only one way, i.e., 73702225 + 149769 = 8585^2 + 387^2 .

It is not an unprimeable number, because it can be changed into a prime (73851991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18462997 + ... + 18463000.

Almost surely, 2^73851994 is an apocalyptic number.

73851994 is a deficient number, since it is larger than the sum of its proper divisors (36926000).

73851994 is a wasteful number, since it uses less digits than its factorization.

73851994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36925999.

The product of its digits is 272160, while the sum is 46.

The square root of 73851994 is about 8593.7182872142. The cubic root of 73851994 is about 419.5535581216.

The spelling of 73851994 in words is "seventy-three million, eight hundred fifty-one thousand, nine hundred ninety-four".