1364031989557 has 4 divisors (see below), whose sum is σ = 1364040439776. Its totient is φ = 1364023539340.

The previous prime is 1364031989521. The next prime is 1364031989561. The reversal of 1364031989557 is 7559891304631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1364031989557 - 2⁷ = 1364031989429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1364031989495 and 1364031989504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1364031989587) 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, 3978169 + ... + 4307422.

It is an arithmetic number, because the mean of its divisors is an integer number (341010109944).

Almost surely, 2^{1364031989557} is an apocalyptic number.

It is an amenable number.

1364031989557 is a deficient number, since it is larger than the sum of its proper divisors (8450219).

1364031989557 is an equidigital number, since it uses as much as digits as its factorization.

1364031989557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450218.

The product of its (nonzero) digits is 24494400, while the sum is 61.

The spelling of 1364031989557 in words is "one trillion, three hundred sixty-four billion, thirty-one million, nine hundred eighty-nine thousand, five hundred fifty-seven".