73870191 has 16 divisors (see below), whose sum is σ = 109799520. Its totient is φ = 49083840.

The previous prime is 73870189. The next prime is 73870201. The reversal of 73870191 is 19107837.

It is not a de Polignac number, because 73870191 - 2¹ = 73870189 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73870141) 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, 4081 + ... + 12821.

It is an arithmetic number, because the mean of its divisors is an integer number (6862470).

Almost surely, 2^73870191 is an apocalyptic number.

73870191 is a deficient number, since it is larger than the sum of its proper divisors (35929329).

73870191 is a wasteful number, since it uses less digits than its factorization.

73870191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9063 (or 9057 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 73870191 is about 8594.7769604569. The cubic root of 73870191 is about 419.5880143753.

The spelling of 73870191 in words is "seventy-three million, eight hundred seventy thousand, one hundred ninety-one".