2638742573 has 8 divisors (see below), whose sum is σ = 2696035968. Its totient is φ = 2581497184.

The previous prime is 2638742569. The next prime is 2638742611. The reversal of 2638742573 is 3752478362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2638742573 - 2² = 2638742569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638742543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113090 + ... + 134412.

It is an arithmetic number, because the mean of its divisors is an integer number (337004496).

Almost surely, 2^2638742573 is an apocalyptic number.

It is an amenable number.

2638742573 is a deficient number, since it is larger than the sum of its proper divisors (57293395).

2638742573 is a wasteful number, since it uses less digits than its factorization.

2638742573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24003.

The product of its digits is 1693440, while the sum is 47.

The square root of 2638742573 is about 51368.6925373812. The cubic root of 2638742573 is about 1381.8651830555.

The spelling of 2638742573 in words is "two billion, six hundred thirty-eight million, seven hundred forty-two thousand, five hundred seventy-three".