1197962261 has 2 divisors, whose sum is σ = 1197962262. Its totient is φ = 1197962260.

The previous prime is 1197962257. The next prime is 1197962279. The reversal of 1197962261 is 1622697911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1191561361 + 6400900 = 34519^2 + 2530^2 .

It is an emirp because it is prime and its reverse (1622697911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1197962261 - 2² = 1197962257 is a prime.

It is a super-3 number, since 3×1197962261³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197962221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598981130 + 598981131.

It is an arithmetic number, because the mean of its divisors is an integer number (598981131).

Almost surely, 2^1197962261 is an apocalyptic number.

It is an amenable number.

1197962261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197962261 is an equidigital number, since it uses as much as digits as its factorization.

1197962261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 44.

The square root of 1197962261 is about 34611.5914254170. The cubic root of 1197962261 is about 1062.0567226050.

The spelling of 1197962261 in words is "one billion, one hundred ninety-seven million, nine hundred sixty-two thousand, two hundred sixty-one".