3187785280969 has 9 divisors (see below), whose sum is σ = 3233444618541. Its totient is φ = 3142761916140.

The previous prime is 3187785280937. The next prime is 3187785280973. The reversal of 3187785280969 is 9690825877813.

The square root of 3187785280969 is 1785437.

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

It is not a de Polignac number, because 3187785280969 - 2⁵ = 3187785280937 is a prime.

It is a super-2 number, since 2×3187785280969² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3187788280969) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 126753454 + ... + 126778600.

Almost surely, 2^{3187785280969} is an apocalyptic number.

3187785280969 is the 1785437-th square number.

3187785280969 is the 892719-th centered octagonal number.

It is an amenable number.

3187785280969 is a deficient number, since it is larger than the sum of its proper divisors (45659337572).

3187785280969 is an frugal number, since it uses more digits than its factorization.

3187785280969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50436 (or 25218 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 73.

The spelling of 3187785280969 in words is "three trillion, one hundred eighty-seven billion, seven hundred eighty-five million, two hundred eighty thousand, nine hundred sixty-nine".