1198007977 has 2 divisors, whose sum is σ = 1198007978. Its totient is φ = 1198007976.

The previous prime is 1198007971. The next prime is 1198007981. The reversal of 1198007977 is 7797008911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 873143401 + 324864576 = 29549^2 + 18024^2 .

It is a cyclic number.

It is not a de Polignac number, because 1198007977 - 2⁷ = 1198007849 is a prime.

It is a super-2 number, since 2×1198007977² = 2870446225911265058, 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 1198007977.

It is not a weakly prime, because it can be changed into another prime (1198007971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599003988 + 599003989.

It is an arithmetic number, because the mean of its divisors is an integer number (599003989).

Almost surely, 2^1198007977 is an apocalyptic number.

It is an amenable number.

1198007977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198007977 is an equidigital number, since it uses as much as digits as its factorization.

1198007977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 222264, while the sum is 49.

The square root of 1198007977 is about 34612.2518337077. The cubic root of 1198007977 is about 1062.0702323148.

The spelling of 1198007977 in words is "one billion, one hundred ninety-eight million, seven thousand, nine hundred seventy-seven".