1693691061 has 4 divisors (see below), whose sum is σ = 2258254752. Its totient is φ = 1129127372.

The previous prime is 1693691059. The next prime is 1693691071. The reversal of 1693691061 is 1601963961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1693691061 - 2¹ = 1693691059 is a prime.

It is a super-2 number, since 2×1693691061² = 5737178820222611442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1693691071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282281841 + ... + 282281846.

It is an arithmetic number, because the mean of its divisors is an integer number (564563688).

Almost surely, 2^1693691061 is an apocalyptic number.

It is an amenable number.

1693691061 is a deficient number, since it is larger than the sum of its proper divisors (564563691).

1693691061 is an equidigital number, since it uses as much as digits as its factorization.

1693691061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564563690.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 1693691061 is about 41154.4780188013. The cubic root of 1693691061 is about 1192.0049671448.

The spelling of 1693691061 in words is "one billion, six hundred ninety-three million, six hundred ninety-one thousand, sixty-one".