1693797740 has 48 divisors (see below), whose sum is σ = 3802196160. Its totient is φ = 632248320.

The previous prime is 1693797739. The next prime is 1693797767. The reversal of 1693797740 is 477973961.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 26045 + ... + 63764.

It is an arithmetic number, because the mean of its divisors is an integer number (79212420).

Almost surely, 2^1693797740 is an apocalyptic number.

1693797740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1693797740 is an abundant number, since it is smaller than the sum of its proper divisors (2108398420).

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

1693797740 is a wasteful number, since it uses less digits than its factorization.

1693797740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89882 (or 89880 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 53.

The square root of 1693797740 is about 41155.7740784935. The cubic root of 1693797740 is about 1192.0299932020.

The spelling of 1693797740 in words is "one billion, six hundred ninety-three million, seven hundred ninety-seven thousand, seven hundred forty".