653194993 has 16 divisors (see below), whose sum is σ = 730747584. Its totient is φ = 578856960.

The previous prime is 653194987. The next prime is 653194999. The reversal of 653194993 is 399491356.

It is an interprime number because it is at equal distance from previous prime (653194987) and next prime (653194999).

It is not a de Polignac number, because 653194993 - 2²⁵ = 619640561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653194999) 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, 66921 + ... + 76057.

It is an arithmetic number, because the mean of its divisors is an integer number (45671724).

Almost surely, 2^653194993 is an apocalyptic number.

It is an amenable number.

653194993 is a deficient number, since it is larger than the sum of its proper divisors (77552591).

653194993 is a wasteful number, since it uses less digits than its factorization.

653194993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9312.

The product of its digits is 787320, while the sum is 49.

The square root of 653194993 is about 25557.6797264540. The cubic root of 653194993 is about 867.6560825607.

The spelling of 653194993 in words is "six hundred fifty-three million, one hundred ninety-four thousand, nine hundred ninety-three".