1690469908 has 12 divisors (see below), whose sum is σ = 2971356192. Its totient is φ = 841511000.

The previous prime is 1690469899. The next prime is 1690469917. The reversal of 1690469908 is 8099640961.

It is an interprime number because it is at equal distance from previous prime (1690469899) and next prime (1690469917).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929968 + ... + 931783.

It is an arithmetic number, because the mean of its divisors is an integer number (247613016).

Almost surely, 2^1690469908 is an apocalyptic number.

It is an amenable number.

1690469908 is a deficient number, since it is larger than the sum of its proper divisors (1280886284).

1690469908 is a wasteful number, since it uses less digits than its factorization.

1690469908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861982 (or 1861980 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 1690469908 is about 41115.3244909973. The cubic root of 1690469908 is about 1191.2488144677.

The spelling of 1690469908 in words is "one billion, six hundred ninety million, four hundred sixty-nine thousand, nine hundred eight".