245370177389 has 2 divisors, whose sum is σ = 245370177390. Its totient is φ = 245370177388.

The previous prime is 245370177347. The next prime is 245370177457. The reversal of 245370177389 is 983771073542.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182235072100 + 63135105289 = 426890^2 + 251267^2 .

It is a cyclic number.

It is not a de Polignac number, because 245370177389 - 2²⁸ = 245101741933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245370177319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122685088694 + 122685088695.

It is an arithmetic number, because the mean of its divisors is an integer number (122685088695).

Almost surely, 2^245370177389 is an apocalyptic number.

It is an amenable number.

245370177389 is a deficient number, since it is larger than the sum of its proper divisors (1).

245370177389 is an equidigital number, since it uses as much as digits as its factorization.

245370177389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8890560, while the sum is 56.

The spelling of 245370177389 in words is "two hundred forty-five billion, three hundred seventy million, one hundred seventy-seven thousand, three hundred eighty-nine".