74301491889 has 45 divisors (see below), whose sum is σ = 114807032571. Its totient is φ = 47887381440.

The previous prime is 74301491837. The next prime is 74301491893. The reversal of 74301491889 is 98819410347.

The square root of 74301491889 is 272583.

It is a perfect power (a square), and thus also a powerful number.

74301491889 is a `hidden beast` number, since 74 + 3 + 0 + 1 + 491 + 8 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 69513959025 + 4787532864 = 263655^2 + 69192^2 .

It is not a de Polignac number, because 74301491889 - 2¹⁷ = 74301360817 is a prime.

It is a super-2 number, since 2×74301491889² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74301491819) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 76050169 + ... + 76051145.

Almost surely, 2^74301491889 is an apocalyptic number.

74301491889 is the 272583-rd square number.

74301491889 is the 136292-nd centered octagonal number.

It is an amenable number.

74301491889 is a deficient number, since it is larger than the sum of its proper divisors (40505540682).

74301491889 is an frugal number, since it uses more digits than its factorization.

74301491889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 74301491889 in words is "seventy-four billion, three hundred one million, four hundred ninety-one thousand, eight hundred eighty-nine".