7474781889 has 12 divisors (see below), whose sum is σ = 10798010496. Its totient is φ = 4982678712.

The previous prime is 7474781869. The next prime is 7474781933. The reversal of 7474781889 is 9881874747.

7474781889 is a `hidden beast` number, since 7 + 474 + 7 + 81 + 8 + 89 = 666.

It is not a de Polignac number, because 7474781889 - 2¹³ = 7474773697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7474781869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64792 + ... + 138374.

It is an arithmetic number, because the mean of its divisors is an integer number (899834208).

Almost surely, 2^7474781889 is an apocalyptic number.

It is an amenable number.

7474781889 is a deficient number, since it is larger than the sum of its proper divisors (3323228607).

7474781889 is a wasteful number, since it uses less digits than its factorization.

7474781889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84876 (or 84873 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 63.

The square root of 7474781889 is about 86456.8209512702. The cubic root of 7474781889 is about 1955.2374555624.

The spelling of 7474781889 in words is "seven billion, four hundred seventy-four million, seven hundred eighty-one thousand, eight hundred eighty-nine".