74370087889 has 4 divisors (see below), whose sum is σ = 75136789924. Its totient is φ = 73603385856.

The previous prime is 74370087887. The next prime is 74370087919. The reversal of 74370087889 is 98878007347.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10053070225 + 64317017664 = 100265^2 + 253608^2 .

It is a cyclic number.

It is not a de Polignac number, because 74370087889 - 2¹ = 74370087887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74370087887) 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, 383350872 + ... + 383351065.

It is an arithmetic number, because the mean of its divisors is an integer number (18784197481).

Almost surely, 2^74370087889 is an apocalyptic number.

It is an amenable number.

74370087889 is a deficient number, since it is larger than the sum of its proper divisors (766702035).

74370087889 is an equidigital number, since it uses as much as digits as its factorization.

74370087889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766702034.

The product of its (nonzero) digits is 18966528, while the sum is 61.

The spelling of 74370087889 in words is "seventy-four billion, three hundred seventy million, eighty-seven thousand, eight hundred eighty-nine".