919376063281 has 9 divisors (see below), whose sum is σ = 995550891681. Its totient is φ = 848643321552.

The previous prime is 919376063279. The next prime is 919376063357. The reversal of 919376063281 is 182360673919.

The square root of 919376063281 is 958841.

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

919376063281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 418338597681 + 501037465600 = 646791^2 + 707840^2 .

It is not a de Polignac number, because 919376063281 - 2¹ = 919376063279 is a prime.

It is a super-2 number, since 2×919376063281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (919376063251) 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, 12428055 + ... + 12501811.

Almost surely, 2^919376063281 is an apocalyptic number.

919376063281 is the 958841-st square number.

919376063281 is the 479421-st centered octagonal number.

It is an amenable number.

919376063281 is a deficient number, since it is larger than the sum of its proper divisors (76174828400).

919376063281 is an frugal number, since it uses more digits than its factorization.

919376063281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147540 (or 73770 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 919376063281 in words is "nine hundred nineteen billion, three hundred seventy-six million, sixty-three thousand, two hundred eighty-one".