1974566636 has 12 divisors (see below), whose sum is σ = 3949133328. Its totient is φ = 846242832.

The previous prime is 1974566611. The next prime is 1974566639. The reversal of 1974566636 is 6366654791.

1974566636 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1974566639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35260091 + ... + 35260146.

It is an arithmetic number, because the mean of its divisors is an integer number (329094444).

Almost surely, 2^1974566636 is an apocalyptic number.

It is an amenable number.

1974566636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1974566636 is a wasteful number, since it uses less digits than its factorization.

1974566636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70520248 (or 70520246 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 53.

The square root of 1974566636 is about 44436.0960931538. The cubic root of 1974566636 is about 1254.5575782685.

The spelling of 1974566636 in words is "one billion, nine hundred seventy-four million, five hundred sixty-six thousand, six hundred thirty-six".