1994611774 has 8 divisors (see below), whose sum is σ = 2992378608. Its totient is φ = 997152240.

The previous prime is 1994611771. The next prime is 1994611813. The reversal of 1994611774 is 4771164991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1994611774² = 7956952257958854152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994611771) 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 3 ways as a sum of consecutive naturals, for example, 59847 + ... + 87010.

It is an arithmetic number, because the mean of its divisors is an integer number (374047326).

Almost surely, 2^1994611774 is an apocalyptic number.

1994611774 is a deficient number, since it is larger than the sum of its proper divisors (997766834).

1994611774 is a wasteful number, since it uses less digits than its factorization.

1994611774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153650.

The product of its digits is 381024, while the sum is 49.

The square root of 1994611774 is about 44661.0767223541. The cubic root of 1994611774 is about 1258.7885757209.

The spelling of 1994611774 in words is "one billion, nine hundred ninety-four million, six hundred eleven thousand, seven hundred seventy-four".