1994685974 has 4 divisors (see below), whose sum is σ = 2992028964. Its totient is φ = 997342986.

The previous prime is 1994685967. The next prime is 1994685989. The reversal of 1994685974 is 4795864991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4795864991 = 907 ⋅5287613.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498671492 + ... + 498671495.

It is an arithmetic number, because the mean of its divisors is an integer number (748007241).

Almost surely, 2^1994685974 is an apocalyptic number.

1994685974 is a deficient number, since it is larger than the sum of its proper divisors (997342990).

1994685974 is an equidigital number, since it uses as much as digits as its factorization.

1994685974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997342989.

The product of its digits is 19595520, while the sum is 62.

The square root of 1994685974 is about 44661.9074156042. The cubic root of 1994685974 is about 1258.8041845987.

The spelling of 1994685974 in words is "one billion, nine hundred ninety-four million, six hundred eighty-five thousand, nine hundred seventy-four".