1691384930 has 16 divisors (see below), whose sum is σ = 3045021120. Its totient is φ = 676436592.

The previous prime is 1691384923. The next prime is 1691384941. The reversal of 1691384930 is 394831961.

It is a super-2 number, since 2×1691384930² = 5721565962862209800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68057 + ... + 89523.

It is an arithmetic number, because the mean of its divisors is an integer number (190313820).

Almost surely, 2^1691384930 is an apocalyptic number.

1691384930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1691384930 is a deficient number, since it is larger than the sum of its proper divisors (1353636190).

1691384930 is a wasteful number, since it uses less digits than its factorization.

1691384930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29353.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 1691384930 is about 41126.4504911377. The cubic root of 1691384930 is about 1191.4637097970.

The spelling of 1691384930 in words is "one billion, six hundred ninety-one million, three hundred eighty-four thousand, nine hundred thirty".