1694004749 has 8 divisors (see below), whose sum is σ = 1735932408. Its totient is φ = 1652106240.

The previous prime is 1694004743. The next prime is 1694004757. The reversal of 1694004749 is 9474004961.

It can be written as a sum of positive squares in 4 ways, for example, as 142038724 + 1551966025 = 11918^2 + 39395^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1694004749 - 2⁴ = 1694004733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1694004743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153629 + ... + 164285.

It is an arithmetic number, because the mean of its divisors is an integer number (216991551).

Almost surely, 2^1694004749 is an apocalyptic number.

It is an amenable number.

1694004749 is a deficient number, since it is larger than the sum of its proper divisors (41927659).

1694004749 is a wasteful number, since it uses less digits than its factorization.

1694004749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14575.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 1694004749 is about 41158.2889464565. The cubic root of 1694004749 is about 1192.0785528931.

The spelling of 1694004749 in words is "one billion, six hundred ninety-four million, four thousand, seven hundred forty-nine".