1627213457 has 2 divisors, whose sum is σ = 1627213458. Its totient is φ = 1627213456.

The previous prime is 1627213397. The next prime is 1627213459. The reversal of 1627213457 is 7543127261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1625783041 + 1430416 = 40321^2 + 1196^2 .

It is an emirp because it is prime and its reverse (7543127261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1627213457 - 2¹² = 1627209361 is a prime.

Together with 1627213459, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1627213457.

It is not a weakly prime, because it can be changed into another prime (1627213459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813606728 + 813606729.

It is an arithmetic number, because the mean of its divisors is an integer number (813606729).

Almost surely, 2^1627213457 is an apocalyptic number.

It is an amenable number.

1627213457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1627213457 is an equidigital number, since it uses as much as digits as its factorization.

1627213457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 1627213457 is about 40338.7339538563. The cubic root of 1627213457 is about 1176.2009045692.

The spelling of 1627213457 in words is "one billion, six hundred twenty-seven million, two hundred thirteen thousand, four hundred fifty-seven".