1690476306 has 16 divisors (see below), whose sum is σ = 3398117184. Its totient is φ = 560631344.

The previous prime is 1690476301. The next prime is 1690476317. The reversal of 1690476306 is 6036740961.

It is a super-2 number, since 2×1690476306² = 5715420282294811272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1690476301) 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, 713910 + ... + 716273.

It is an arithmetic number, because the mean of its divisors is an integer number (212382324).

Almost surely, 2^1690476306 is an apocalyptic number.

1690476306 is an abundant number, since it is smaller than the sum of its proper divisors (1707640878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1690476306 is a wasteful number, since it uses less digits than its factorization.

1690476306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430385.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 1690476306 is about 41115.4022964631. The cubic root of 1690476306 is about 1191.2503173241.

The spelling of 1690476306 in words is "one billion, six hundred ninety million, four hundred seventy-six thousand, three hundred six".