1690950506 has 24 divisors (see below), whose sum is σ = 2955126240. Its totient is φ = 723565752.

The previous prime is 1690950497. The next prime is 1690950511. The reversal of 1690950506 is 6050590961.

It is a super-2 number, since 2×1690950506² = 5718627227483312072, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51491 + ... + 77673.

It is an arithmetic number, because the mean of its divisors is an integer number (123130260).

Almost surely, 2^1690950506 is an apocalyptic number.

1690950506 is a deficient number, since it is larger than the sum of its proper divisors (1264175734).

1690950506 is a wasteful number, since it uses less digits than its factorization.

1690950506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26858 (or 26851 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 1690950506 is about 41121.1685874806. The cubic root of 1690950506 is about 1191.3616938411.

The spelling of 1690950506 in words is "one billion, six hundred ninety million, nine hundred fifty thousand, five hundred six".