390249425633 has 2 divisors, whose sum is σ = 390249425634. Its totient is φ = 390249425632.

The previous prime is 390249425627. The next prime is 390249425653. The reversal of 390249425633 is 336524942093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386600419984 + 3649005649 = 621772^2 + 60407^2 .

It is a cyclic number.

It is not a de Polignac number, because 390249425633 - 2⁴ = 390249425617 is a prime.

It is a super-3 number, since 3×390249425633³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (390249425603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195124712816 + 195124712817.

It is an arithmetic number, because the mean of its divisors is an integer number (195124712817).

Almost surely, 2^390249425633 is an apocalyptic number.

It is an amenable number.

390249425633 is a deficient number, since it is larger than the sum of its proper divisors (1).

390249425633 is an equidigital number, since it uses as much as digits as its factorization.

390249425633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 50.

The spelling of 390249425633 in words is "three hundred ninety billion, two hundred forty-nine million, four hundred twenty-five thousand, six hundred thirty-three".