74202193081 has 4 divisors (see below), whose sum is σ = 75247294464. Its totient is φ = 73157091700.

The previous prime is 74202193069. The next prime is 74202193129. The reversal of 74202193081 is 18039120247.

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 74202193081 - 2²⁷ = 74067975353 is a prime.

It is a super-2 number, since 2×74202193081² (a number of 23 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 74202193081.

It is not an unprimeable number, because it can be changed into a prime (74202163081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522550585 + ... + 522550726.

It is an arithmetic number, because the mean of its divisors is an integer number (18811823616).

Almost surely, 2^74202193081 is an apocalyptic number.

74202193081 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

74202193081 is a deficient number, since it is larger than the sum of its proper divisors (1045101383).

74202193081 is a wasteful number, since it uses less digits than its factorization.

74202193081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045101382.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 74202193081 in words is "seventy-four billion, two hundred two million, one hundred ninety-three thousand, eighty-one".