1690304109 has 64 divisors (see below), whose sum is σ = 2647572480. Its totient is φ = 950653440.

The previous prime is 1690304107. The next prime is 1690304111. The reversal of 1690304109 is 9014030961.

It is an interprime number because it is at equal distance from previous prime (1690304107) and next prime (1690304111).

It is not a de Polignac number, because 1690304109 - 2¹ = 1690304107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1690304109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690304107) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2474482 + ... + 2475164.

It is an arithmetic number, because the mean of its divisors is an integer number (41368320).

Almost surely, 2^1690304109 is an apocalyptic number.

It is an amenable number.

1690304109 is a deficient number, since it is larger than the sum of its proper divisors (957268371).

1690304109 is a wasteful number, since it uses less digits than its factorization.

1690304109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1690304109 is about 41113.3081738748. The cubic root of 1690304109 is about 1191.2098678374.

The spelling of 1690304109 in words is "one billion, six hundred ninety million, three hundred four thousand, one hundred nine".