1690086432 has 48 divisors (see below), whose sum is σ = 4441893120. Its totient is φ = 562674432.

The previous prime is 1690086403. The next prime is 1690086473. The reversal of 1690086432 is 2346800961.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 71569 + ... + 92207.

It is an arithmetic number, because the mean of its divisors is an integer number (92539440).

Almost surely, 2^1690086432 is an apocalyptic number.

1690086432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1690086432 is an abundant number, since it is smaller than the sum of its proper divisors (2751806688).

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

1690086432 is a wasteful number, since it uses less digits than its factorization.

1690086432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21505 (or 21497 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 1690086432 is about 41110.6608071434. The cubic root of 1690086432 is about 1191.1587310586.

The spelling of 1690086432 in words is "one billion, six hundred ninety million, eighty-six thousand, four hundred thirty-two".