1690761193 has 6 divisors (see below), whose sum is σ = 1858440122. Its totient is φ = 1537055520.

The previous prime is 1690761179. The next prime is 1690761203. The reversal of 1690761193 is 3911670961.

It can be written as a sum of positive squares in only one way, i.e., 1153077849 + 537683344 = 33957^2 + 23188^2 .

It is not a de Polignac number, because 1690761193 - 2²¹ = 1688664041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1690711193) 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 5 ways as a sum of consecutive naturals, for example, 6986496 + ... + 6986737.

Almost surely, 2^1690761193 is an apocalyptic number.

It is an amenable number.

1690761193 is a deficient number, since it is larger than the sum of its proper divisors (167678929).

1690761193 is a wasteful number, since it uses less digits than its factorization.

1690761193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13973255 (or 13973244 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 1690761193 is about 41118.8666307815. The cubic root of 1690761193 is about 1191.3172319299.

The spelling of 1690761193 in words is "one billion, six hundred ninety million, seven hundred sixty-one thousand, one hundred ninety-three".