1690663383 has 6 divisors (see below), whose sum is σ = 2442069344. Its totient is φ = 1127108916.

The previous prime is 1690663211. The next prime is 1690663409. The reversal of 1690663383 is 3833660961.

1690663383 is a `hidden beast` number, since 1 + 6 + 9 + 0 + 6 + 633 + 8 + 3 = 666.

It is not a de Polignac number, because 1690663383 - 2⁹ = 1690662871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690663883) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93925735 + ... + 93925752.

Almost surely, 2^1690663383 is an apocalyptic number.

1690663383 is a deficient number, since it is larger than the sum of its proper divisors (751405961).

1690663383 is a wasteful number, since it uses less digits than its factorization.

1690663383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187851493 (or 187851490 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The square root of 1690663383 is about 41117.6772568685. The cubic root of 1690663383 is about 1191.2942590452.

The spelling of 1690663383 in words is "one billion, six hundred ninety million, six hundred sixty-three thousand, three hundred eighty-three".