1197555407 has 2 divisors, whose sum is σ = 1197555408. Its totient is φ = 1197555406.

The previous prime is 1197555397. The next prime is 1197555433. The reversal of 1197555407 is 7045557911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1197555407 - 2²⁴ = 1180778191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197555907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598777703 + 598777704.

It is an arithmetic number, because the mean of its divisors is an integer number (598777704).

Almost surely, 2^1197555407 is an apocalyptic number.

1197555407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197555407 is an equidigital number, since it uses as much as digits as its factorization.

1197555407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220500, while the sum is 44.

The square root of 1197555407 is about 34605.7135022528. The cubic root of 1197555407 is about 1061.9364764820.

The spelling of 1197555407 in words is "one billion, one hundred ninety-seven million, five hundred fifty-five thousand, four hundred seven".