1690703342 has 4 divisors (see below), whose sum is σ = 2536055016. Its totient is φ = 845351670.

The previous prime is 1690703323. The next prime is 1690703383. The reversal of 1690703342 is 2433070961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2433070961 = 181 ⋅13442381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422675834 + ... + 422675837.

It is an arithmetic number, because the mean of its divisors is an integer number (634013754).

Almost surely, 2^1690703342 is an apocalyptic number.

1690703342 is a deficient number, since it is larger than the sum of its proper divisors (845351674).

1690703342 is an equidigital number, since it uses as much as digits as its factorization.

1690703342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845351673.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 1690703342 is about 41118.1631642271. The cubic root of 1690703342 is about 1191.3036444247.

The spelling of 1690703342 in words is "one billion, six hundred ninety million, seven hundred three thousand, three hundred forty-two".