64438141 has 2 divisors, whose sum is σ = 64438142. Its totient is φ = 64438140.

The previous prime is 64438103. The next prime is 64438163. The reversal of 64438141 is 14183446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42954916 + 21483225 = 6554^2 + 4635^2 .

It is a cyclic number.

It is not a de Polignac number, because 64438141 - 2⁷ = 64438013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64438541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32219070 + 32219071.

It is an arithmetic number, because the mean of its divisors is an integer number (32219071).

Almost surely, 2^64438141 is an apocalyptic number.

It is an amenable number.

64438141 is a deficient number, since it is larger than the sum of its proper divisors (1).

64438141 is an equidigital number, since it uses as much as digits as its factorization.

64438141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 31.

The square root of 64438141 is about 8027.3371051676. The cubic root of 64438141 is about 400.9107186552.

The spelling of 64438141 in words is "sixty-four million, four hundred thirty-eight thousand, one hundred forty-one".