1162356661 has 2 divisors, whose sum is σ = 1162356662. Its totient is φ = 1162356660.

The previous prime is 1162356659. The next prime is 1162356703. The reversal of 1162356661 is 1666532611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 728676036 + 433680625 = 26994^2 + 20825^2 .

It is an emirp because it is prime and its reverse (1666532611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1162356661 - 2¹ = 1162356659 is a prime.

Together with 1162356659, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1162356661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1162356631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581178330 + 581178331.

It is an arithmetic number, because the mean of its divisors is an integer number (581178331).

Almost surely, 2^1162356661 is an apocalyptic number.

It is an amenable number.

1162356661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1162356661 is an equidigital number, since it uses as much as digits as its factorization.

1162356661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 1162356661 is about 34093.3521525825. The cubic root of 1162356661 is about 1051.4286406319.

The spelling of 1162356661 in words is "one billion, one hundred sixty-two million, three hundred fifty-six thousand, six hundred sixty-one".