2234908391521 has 9 divisors (see below), whose sum is σ = 2420069776281. Its totient is φ = 2062974421872.

The previous prime is 2234908391497. The next prime is 2234908391533. The reversal of 2234908391521 is 1251938094322.

The square root of 2234908391521 is 1494961.

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

It can be written as a sum of positive squares in 4 ways, for example, as 815569741921 + 1419338649600 = 903089^2 + 1191360^2 .

It is not a de Polignac number, because 2234908391521 - 2²³ = 2234900002913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2234908391621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19376995 + ... + 19491991.

It is an arithmetic number, because the mean of its divisors is an integer number (268896641809).

Almost surely, 2^{2234908391521} is an apocalyptic number.

2234908391521 is the 1494961-st square number.

2234908391521 is the 747481-st centered octagonal number.

It is an amenable number.

2234908391521 is a deficient number, since it is larger than the sum of its proper divisors (185161384760).

2234908391521 is an frugal number, since it uses more digits than its factorization.

2234908391521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230020 (or 115010 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

Multiplying 2234908391521 by its sum of digits (49), we get a square (109510511184529 = 10464727²).

The spelling of 2234908391521 in words is "two trillion, two hundred thirty-four billion, nine hundred eight million, three hundred ninety-one thousand, five hundred twenty-one".