1691230434 has 32 divisors (see below), whose sum is σ = 3534050304. Its totient is φ = 538541520.

The previous prime is 1691230427. The next prime is 1691230441. The reversal of 1691230434 is 4340321961.

It is an interprime number because it is at equal distance from previous prime (1691230427) and next prime (1691230441).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1691230395 and 1691230404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106129 + ... + 121019.

It is an arithmetic number, because the mean of its divisors is an integer number (110439072).

Almost surely, 2^1691230434 is an apocalyptic number.

1691230434 is an abundant number, since it is smaller than the sum of its proper divisors (1842819870).

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

1691230434 is a wasteful number, since it uses less digits than its factorization.

1691230434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15742.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 1691230434 is about 41124.5721436710. The cubic root of 1691230434 is about 1191.4274314433.

The spelling of 1691230434 in words is "one billion, six hundred ninety-one million, two hundred thirty thousand, four hundred thirty-four".