1201930817 has 2 divisors, whose sum is σ = 1201930818. Its totient is φ = 1201930816.

The previous prime is 1201930801. The next prime is 1201930879. The reversal of 1201930817 is 7180391021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 939361201 + 262569616 = 30649^2 + 16204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201930817 - 2⁴ = 1201930801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201938817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600965408 + 600965409.

It is an arithmetic number, because the mean of its divisors is an integer number (600965409).

Almost surely, 2^1201930817 is an apocalyptic number.

It is an amenable number.

1201930817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201930817 is an equidigital number, since it uses as much as digits as its factorization.

1201930817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 1201930817 is about 34668.8738928740. The cubic root of 1201930817 is about 1063.2282080035.

The spelling of 1201930817 in words is "one billion, two hundred one million, nine hundred thirty thousand, eight hundred seventeen".