230838928849 has 27 divisors (see below), whose sum is σ = 240059292123. Its totient is φ = 221971134000.

The previous prime is 230838928807. The next prime is 230838928867. The reversal of 230838928849 is 948829838032.

The square root of 230838928849 is 480457.

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

It can be written as a sum of positive squares in only one way, i.e., 221787309249 + 9051619600 = 470943^2 + 95140^2 .

It is not a de Polignac number, because 230838928849 - 2¹⁹ = 230838404561 is a prime.

It is a super-2 number, since 2×230838928849² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230838928049) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2285533899 + ... + 2285533999.

Almost surely, 2^230838928849 is an apocalyptic number.

230838928849 is the 480457-th square number.

230838928849 is the 240229-th centered octagonal number.

It is an amenable number.

230838928849 is a deficient number, since it is larger than the sum of its proper divisors (9220363274).

230838928849 is an frugal number, since it uses more digits than its factorization.

230838928849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 64.

Multiplying 230838928849 by its sum of digits (64), we get a square (14773691446336 = 3843656²).

The spelling of 230838928849 in words is "two hundred thirty billion, eight hundred thirty-eight million, nine hundred twenty-eight thousand, eight hundred forty-nine".