1367145457 has 4 divisors (see below), whose sum is σ = 1447565796. Its totient is φ = 1286725120.

The previous prime is 1367145443. The next prime is 1367145467. The reversal of 1367145457 is 7545417631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7545417631 = 61 ⋅123695371.

It can be written as a sum of positive squares in 2 ways, for example, as 514563856 + 852581601 = 22684^2 + 29199^2 .

It is a cyclic number.

It is not a de Polignac number, because 1367145457 - 2¹¹ = 1367143409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1367145427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40210144 + ... + 40210177.

It is an arithmetic number, because the mean of its divisors is an integer number (361891449).

Almost surely, 2^1367145457 is an apocalyptic number.

1367145457 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1367145457 is a deficient number, since it is larger than the sum of its proper divisors (80420339).

1367145457 is an equidigital number, since it uses as much as digits as its factorization.

1367145457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80420338.

The product of its digits is 352800, while the sum is 43.

The square root of 1367145457 is about 36974.9301148765. The cubic root of 1367145457 is about 1109.8686252546.

The spelling of 1367145457 in words is "one billion, three hundred sixty-seven million, one hundred forty-five thousand, four hundred fifty-seven".