1693540801 has 16 divisors (see below), whose sum is σ = 1779932160. Its totient is φ = 1609433280.

The previous prime is 1693540789. The next prime is 1693540817. The reversal of 1693540801 is 1080453961.

It is the 16801-st star number.

It is a cyclic number.

It is not a de Polignac number, because 1693540801 - 2¹³ = 1693532609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1693540841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1583695 + ... + 1584763.

It is an arithmetic number, because the mean of its divisors is an integer number (111245760).

Almost surely, 2^1693540801 is an apocalyptic number.

It is an amenable number.

1693540801 is a deficient number, since it is larger than the sum of its proper divisors (86391359).

1693540801 is a wasteful number, since it uses less digits than its factorization.

1693540801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1693540801 is about 41152.6524175538. The cubic root of 1693540801 is about 1191.9697155440.

The spelling of 1693540801 in words is "one billion, six hundred ninety-three million, five hundred forty thousand, eight hundred one".