1190237261 has 2 divisors, whose sum is σ = 1190237262. Its totient is φ = 1190237260.

The previous prime is 1190237233. The next prime is 1190237287. The reversal of 1190237261 is 1627320911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 620508100 + 569729161 = 24910^2 + 23869^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1190237261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1190231261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595118630 + 595118631.

It is an arithmetic number, because the mean of its divisors is an integer number (595118631).

Almost surely, 2^1190237261 is an apocalyptic number.

It is an amenable number.

1190237261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1190237261 is an equidigital number, since it uses as much as digits as its factorization.

1190237261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1190237261 is about 34499.8153763176. The cubic root of 1190237261 is about 1059.7689246510.

The spelling of 1190237261 in words is "one billion, one hundred ninety million, two hundred thirty-seven thousand, two hundred sixty-one".