1694213564 has 12 divisors (see below), whose sum is σ = 2979774000. Its totient is φ = 842849568.

The previous prime is 1694213561. The next prime is 1694213567. The reversal of 1694213564 is 4653124961.

It is an interprime number because it is at equal distance from previous prime (1694213561) and next prime (1694213567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1694213561) 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, 1063409 + ... + 1065000.

It is an arithmetic number, because the mean of its divisors is an integer number (248314500).

Almost surely, 2^1694213564 is an apocalyptic number.

It is an amenable number.

1694213564 is a deficient number, since it is larger than the sum of its proper divisors (1285560436).

1694213564 is a wasteful number, since it uses less digits than its factorization.

1694213564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128612 (or 2128610 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 1694213564 is about 41160.8255991058. The cubic root of 1694213564 is about 1192.1275322236.

The spelling of 1694213564 in words is "one billion, six hundred ninety-four million, two hundred thirteen thousand, five hundred sixty-four".