1745747993 has 4 divisors (see below), whose sum is σ = 1904452368. Its totient is φ = 1587043620.

The previous prime is 1745747977. The next prime is 1745747999. The reversal of 1745747993 is 3997475471.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1745747993 - 2⁴ = 1745747977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1745747999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79352171 + ... + 79352192.

It is an arithmetic number, because the mean of its divisors is an integer number (476113092).

Almost surely, 2^1745747993 is an apocalyptic number.

It is an amenable number.

1745747993 is a deficient number, since it is larger than the sum of its proper divisors (158704375).

1745747993 is a wasteful number, since it uses less digits than its factorization.

1745747993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158704374.

The product of its digits is 6667920, while the sum is 56.

The square root of 1745747993 is about 41782.1492147065. The cubic root of 1745747993 is about 1204.0943460999.

The spelling of 1745747993 in words is "one billion, seven hundred forty-five million, seven hundred forty-seven thousand, nine hundred ninety-three".