537419481921 has 45 divisors (see below), whose sum is σ = 905779091841. Its totient is φ = 307035267336.

The previous prime is 537419481887. The next prime is 537419481923. The reversal of 537419481921 is 129184914735.

The square root of 537419481921 is 733089.

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

537419481921 is a `hidden beast` number, since 5 + 3 + 74 + 1 + 9 + 481 + 92 + 1 = 666.

It is not a de Polignac number, because 537419481921 - 2⁷ = 537419481793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (537419481923) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 107761590 + ... + 107766576.

Almost surely, 2^537419481921 is an apocalyptic number.

537419481921 is the 733089-th square number.

537419481921 is the 366545-th centered octagonal number.

It is an amenable number.

537419481921 is a deficient number, since it is larger than the sum of its proper divisors (368359609920).

537419481921 is an frugal number, since it uses more digits than its factorization.

537419481921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10008 (or 4997 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The spelling of 537419481921 in words is "five hundred thirty-seven billion, four hundred nineteen million, four hundred eighty-one thousand, nine hundred twenty-one".