5642323381 has 4 divisors (see below), whose sum is σ = 5649959200. Its totient is φ = 5634687564.

The previous prime is 5642323369. The next prime is 5642323411. The reversal of 5642323381 is 1833232465.

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 a de Polignac number, because none of the positive numbers 2^k-5642323381 is a prime.

It is a super-2 number, since 2×5642323381² = 63671626271558542322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5642323381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5642323301) 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, 3816801 + ... + 3818278.

It is an arithmetic number, because the mean of its divisors is an integer number (1412489800).

Almost surely, 2^5642323381 is an apocalyptic number.

It is an amenable number.

5642323381 is a deficient number, since it is larger than the sum of its proper divisors (7635819).

5642323381 is an equidigital number, since it uses as much as digits as its factorization.

5642323381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7635818.

The product of its digits is 103680, while the sum is 37.

The square root of 5642323381 is about 75115.4004249461. The cubic root of 5642323381 is about 1780.2704825045.

The spelling of 5642323381 in words is "five billion, six hundred forty-two million, three hundred twenty-three thousand, three hundred eighty-one".