1198015807 has 2 divisors, whose sum is σ = 1198015808. Its totient is φ = 1198015806.

The previous prime is 1198015799. The next prime is 1198015837. The reversal of 1198015807 is 7085108911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1198015807 - 2³ = 1198015799 is a prime.

It is a super-2 number, since 2×1198015807² = 2870483747643722498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1198015807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1198015837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599007903 + 599007904.

It is an arithmetic number, because the mean of its divisors is an integer number (599007904).

Almost surely, 2^1198015807 is an apocalyptic number.

1198015807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198015807 is an equidigital number, since it uses as much as digits as its factorization.

1198015807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 40.

The square root of 1198015807 is about 34612.3649437596. The cubic root of 1198015807 is about 1062.0725461535.

The spelling of 1198015807 in words is "one billion, one hundred ninety-eight million, fifteen thousand, eight hundred seven".