1453423157 has 2 divisors, whose sum is σ = 1453423158. Its totient is φ = 1453423156.

The previous prime is 1453423129. The next prime is 1453423163. The reversal of 1453423157 is 7513243541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 810597841 + 642825316 = 28471^2 + 25354^2 .

It is an emirp because it is prime and its reverse (7513243541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1453423157 - 2¹⁰ = 1453422133 is a prime.

It is a super-2 number, since 2×1453423157² = 4224877746607693298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1453423457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 726711578 + 726711579.

It is an arithmetic number, because the mean of its divisors is an integer number (726711579).

Almost surely, 2^1453423157 is an apocalyptic number.

It is an amenable number.

1453423157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1453423157 is an equidigital number, since it uses as much as digits as its factorization.

1453423157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 35.

The square root of 1453423157 is about 38123.7872856305. The cubic root of 1453423157 is about 1132.7411866211.

Adding to 1453423157 its reverse (7513243541), we get a palindrome (8966666698).

The spelling of 1453423157 in words is "one billion, four hundred fifty-three million, four hundred twenty-three thousand, one hundred fifty-seven".