1195400681 has 2 divisors, whose sum is σ = 1195400682. Its totient is φ = 1195400680.

The previous prime is 1195400639. The next prime is 1195400693. The reversal of 1195400681 is 1860045911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 862009600 + 333391081 = 29360^2 + 18259^2 .

It is a cyclic number.

It is not a de Polignac number, because 1195400681 - 2¹⁸ = 1195138537 is a prime.

It is a super-2 number, since 2×1195400681² = 2857965576270527522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1195400081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597700340 + 597700341.

It is an arithmetic number, because the mean of its divisors is an integer number (597700341).

Almost surely, 2^1195400681 is an apocalyptic number.

It is an amenable number.

1195400681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1195400681 is an equidigital number, since it uses as much as digits as its factorization.

1195400681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 1195400681 is about 34574.5669676426. The cubic root of 1195400681 is about 1061.2991904883.

The spelling of 1195400681 in words is "one billion, one hundred ninety-five million, four hundred thousand, six hundred eighty-one".