738454864981 has 2 divisors, whose sum is σ = 738454864982. Its totient is φ = 738454864980.

The previous prime is 738454864913. The next prime is 738454864991. The reversal of 738454864981 is 189468454837.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 737467020081 + 987844900 = 858759^2 + 31430^2 .

It is a cyclic number.

It is not a de Polignac number, because 738454864981 - 2²³ = 738446476373 is a prime.

It is a super-2 number, since 2×738454864981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (738454864991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369227432490 + 369227432491.

It is an arithmetic number, because the mean of its divisors is an integer number (369227432491).

Almost surely, 2^738454864981 is an apocalyptic number.

It is an amenable number.

738454864981 is a deficient number, since it is larger than the sum of its proper divisors (1).

738454864981 is an equidigital number, since it uses as much as digits as its factorization.

738454864981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185794560, while the sum is 67.

The spelling of 738454864981 in words is "seven hundred thirty-eight billion, four hundred fifty-four million, eight hundred sixty-four thousand, nine hundred eighty-one".