1368771497 has 4 divisors (see below), whose sum is σ = 1391210436. Its totient is φ = 1346332560.

The previous prime is 1368771491. The next prime is 1368771539. The reversal of 1368771497 is 7941778631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 659667856 + 709103641 = 25684^2 + 26629^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368771497 - 2⁶ = 1368771433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1368771491) 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, 11219378 + ... + 11219499.

It is an arithmetic number, because the mean of its divisors is an integer number (347802609).

Almost surely, 2^1368771497 is an apocalyptic number.

It is an amenable number.

1368771497 is a deficient number, since it is larger than the sum of its proper divisors (22438939).

1368771497 is an equidigital number, since it uses as much as digits as its factorization.

1368771497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22438938.

The product of its digits is 1778112, while the sum is 53.

The square root of 1368771497 is about 36996.9119927596. The cubic root of 1368771497 is about 1110.3084652540.

It can be divided in two parts, 13687 and 71497, that added together give a cube (85184 = 44³).

The spelling of 1368771497 in words is "one billion, three hundred sixty-eight million, seven hundred seventy-one thousand, four hundred ninety-seven".