1238905740739 has 2 divisors, whose sum is σ = 1238905740740. Its totient is φ = 1238905740738.

The previous prime is 1238905740731. The next prime is 1238905740769. The reversal of 1238905740739 is 9370475098321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1238905740739 - 2³ = 1238905740731 is a prime.

It is a super-2 number, since 2×1238905740739² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1238905740731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619452870369 + 619452870370.

It is an arithmetic number, because the mean of its divisors is an integer number (619452870370).

Almost surely, 2^{1238905740739} is an apocalyptic number.

1238905740739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238905740739 is an equidigital number, since it uses as much as digits as its factorization.

1238905740739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 1238905740739 in words is "one trillion, two hundred thirty-eight billion, nine hundred five million, seven hundred forty thousand, seven hundred thirty-nine".