1612263397 has 2 divisors, whose sum is σ = 1612263398. Its totient is φ = 1612263396.

The previous prime is 1612263383. The next prime is 1612263421. The reversal of 1612263397 is 7933622161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1062173281 + 550090116 = 32591^2 + 23454^2 .

It is an emirp because it is prime and its reverse (7933622161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1612263397 - 2¹¹ = 1612261349 is a prime.

It is a super-2 number, since 2×1612263397² = 5198786522611959218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1612263307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806131698 + 806131699.

It is an arithmetic number, because the mean of its divisors is an integer number (806131699).

Almost surely, 2^1612263397 is an apocalyptic number.

It is an amenable number.

1612263397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612263397 is an equidigital number, since it uses as much as digits as its factorization.

1612263397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 1612263397 is about 40152.9998505716. Note that the first 3 decimals coincide. The cubic root of 1612263397 is about 1172.5876923515.

The spelling of 1612263397 in words is "one billion, six hundred twelve million, two hundred sixty-three thousand, three hundred ninety-seven".