46185878281 has 9 divisors (see below), whose sum is σ = 48748962573. Its totient is φ = 43751174220.

The previous prime is 46185878279. The next prime is 46185878327. The reversal of 46185878281 is 18287858164.

The square root of 46185878281 is 214909.

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

It is not a de Polignac number, because 46185878281 - 2¹ = 46185878279 is a prime.

It is a super-2 number, since 2×46185878281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46185878201) 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, 4077616 + ... + 4088926.

It is an arithmetic number, because the mean of its divisors is an integer number (5416551397).

Almost surely, 2^46185878281 is an apocalyptic number.

46185878281 is the 214909-th square number.

46185878281 is the 107455-th centered octagonal number.

It is an amenable number.

46185878281 is a deficient number, since it is larger than the sum of its proper divisors (2563084292).

46185878281 is an frugal number, since it uses more digits than its factorization.

46185878281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22660 (or 11330 counting only the distinct ones).

The product of its digits is 6881280, while the sum is 58.

The spelling of 46185878281 in words is "forty-six billion, one hundred eighty-five million, eight hundred seventy-eight thousand, two hundred eighty-one".