1319922956641 has 3 divisors (see below), whose sum is σ = 1319924105521. Its totient is φ = 1319921807762.

The previous prime is 1319922956591. The next prime is 1319922956663. The reversal of 1319922956641 is 1466592299131.

It is a happy number.

The square root of 1319922956641 is 1148879.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1319922956641 - 2²¹ = 1319920859489 is a prime.

It is a super-2 number, since 2×1319922956641² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1319922956741) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 574440 + ... + 1723318.

Almost surely, 2^{1319922956641} is an apocalyptic number.

1319922956641 is the 1148879-th square number.

1319922956641 is the 574440-th centered octagonal number.

It is an amenable number.

1319922956641 is a deficient number, since it is larger than the sum of its proper divisors (1148880).

1319922956641 is an frugal number, since it uses more digits than its factorization.

1319922956641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297758 (or 1148879 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 58.

The spelling of 1319922956641 in words is "one trillion, three hundred nineteen billion, nine hundred twenty-two million, nine hundred fifty-six thousand, six hundred forty-one".