1162151621 has 2 divisors, whose sum is σ = 1162151622. Its totient is φ = 1162151620.

The previous prime is 1162151609. The next prime is 1162151629. The reversal of 1162151621 is 1261512611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 752898721 + 409252900 = 27439^2 + 20230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1162151621 - 2¹⁰ = 1162150597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1162151629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581075810 + 581075811.

It is an arithmetic number, because the mean of its divisors is an integer number (581075811).

Almost surely, 2^1162151621 is an apocalyptic number.

It is an amenable number.

1162151621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1162151621 is an equidigital number, since it uses as much as digits as its factorization.

1162151621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 26.

The square root of 1162151621 is about 34090.3449821207. The cubic root of 1162151621 is about 1051.3668129062.

The spelling of 1162151621 in words is "one billion, one hundred sixty-two million, one hundred fifty-one thousand, six hundred twenty-one".