1627242641 has 2 divisors, whose sum is σ = 1627242642. Its totient is φ = 1627242640.

The previous prime is 1627242611. The next prime is 1627242667. The reversal of 1627242641 is 1462427261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1536326416 + 90916225 = 39196^2 + 9535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1627242641 - 2¹⁰ = 1627241617 is a prime.

It is a super-2 number, since 2×1627242641² = 5295837225377309762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1627242611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813621320 + 813621321.

It is an arithmetic number, because the mean of its divisors is an integer number (813621321).

Almost surely, 2^1627242641 is an apocalyptic number.

It is an amenable number.

1627242641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1627242641 is an equidigital number, since it uses as much as digits as its factorization.

1627242641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 1627242641 is about 40339.0956889219. The cubic root of 1627242641 is about 1176.2079362306.

The spelling of 1627242641 in words is "one billion, six hundred twenty-seven million, two hundred forty-two thousand, six hundred forty-one".