1290232947208 has 8 divisors (see below), whose sum is σ = 2419186776030. Its totient is φ = 645116473600.

The previous prime is 1290232947187. The next prime is 1290232947209. The reversal of 1290232947208 is 8027492320921.

It can be written as a sum of positive squares in only one way, i.e., 1142713964484 + 147518982724 = 1068978^2 + 384082^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×1290232947208³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1290232947209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80639559193 + ... + 80639559208.

Almost surely, 2^{1290232947208} is an apocalyptic number.

It is an amenable number.

1290232947208 is a deficient number, since it is larger than the sum of its proper divisors (1128953828822).

1290232947208 is a wasteful number, since it uses less digits than its factorization.

1290232947208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161279118407 (or 161279118403 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 1290232947208 in words is "one trillion, two hundred ninety billion, two hundred thirty-two million, nine hundred forty-seven thousand, two hundred eight".