1198707901 has 2 divisors, whose sum is σ = 1198707902. Its totient is φ = 1198707900.

The previous prime is 1198707841. The next prime is 1198707931. The reversal of 1198707901 is 1097078911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1093624900 + 105083001 = 33070^2 + 10251^2 .

It is an emirp because it is prime and its reverse (1097078911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1198707901 - 2¹³ = 1198699709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1198707931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599353950 + 599353951.

It is an arithmetic number, because the mean of its divisors is an integer number (599353951).

Almost surely, 2^1198707901 is an apocalyptic number.

It is an amenable number.

1198707901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198707901 is an equidigital number, since it uses as much as digits as its factorization.

1198707901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 43.

The square root of 1198707901 is about 34622.3612857356. The cubic root of 1198707901 is about 1062.2770266317.

The spelling of 1198707901 in words is "one billion, one hundred ninety-eight million, seven hundred seven thousand, nine hundred one".