993917545 has 16 divisors (see below), whose sum is σ = 1202534208. Its totient is φ = 788598720.

The previous prime is 993917539. The next prime is 993917549. The reversal of 993917545 is 545719399.

It is a happy number.

It is not a de Polignac number, because 993917545 - 2³ = 993917537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 993917492 and 993917501.

It is not an unprimeable number, because it can be changed into a prime (993917549) 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, 648430 + ... + 649960.

It is an arithmetic number, because the mean of its divisors is an integer number (75158388).

Almost surely, 2^993917545 is an apocalyptic number.

It is an amenable number.

993917545 is a deficient number, since it is larger than the sum of its proper divisors (208616663).

993917545 is a wasteful number, since it uses less digits than its factorization.

993917545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520.

The product of its digits is 1530900, while the sum is 52.

The square root of 993917545 is about 31526.4578568541. The cubic root of 993917545 is about 997.9683903574.

The spelling of 993917545 in words is "nine hundred ninety-three million, nine hundred seventeen thousand, five hundred forty-five".