8373402181 has 4 divisors (see below), whose sum is σ = 8386672864. Its totient is φ = 8360131500.

The previous prime is 8373402137. The next prime is 8373402197. The reversal of 8373402181 is 1812043738.

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 8373402181 - 2⁷ = 8373402053 is a prime.

It is a super-2 number, since 2×8373402181² (a number of 21 digits) 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 8373402181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8373408181) 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, 6634395 + ... + 6635656.

It is an arithmetic number, because the mean of its divisors is an integer number (2096668216).

Almost surely, 2^8373402181 is an apocalyptic number.

It is an amenable number.

8373402181 is a deficient number, since it is larger than the sum of its proper divisors (13270683).

8373402181 is a wasteful number, since it uses less digits than its factorization.

8373402181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13270682.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 8373402181 is about 91506.2958544383. The cubic root of 8373402181 is about 2030.6448953676.

The spelling of 8373402181 in words is "eight billion, three hundred seventy-three million, four hundred two thousand, one hundred eighty-one".