1319890527401 has 4 divisors (see below), whose sum is σ = 1319908011204. Its totient is φ = 1319873043600.

The previous prime is 1319890527377. The next prime is 1319890527457. The reversal of 1319890527401 is 1047250989131.

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 1280597773225 + 39292754176 = 1131635^2 + 198224^2 .

It is a cyclic number.

It is not a de Polignac number, because 1319890527401 - 2¹⁸ = 1319890265257 is a prime.

It is a super-2 number, since 2×1319890527401² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1319890527401.

It is not an unprimeable number, because it can be changed into a prime (1319890520401) 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, 8628170 + ... + 8779811.

It is an arithmetic number, because the mean of its divisors is an integer number (329977002801).

Almost surely, 2^{1319890527401} is an apocalyptic number.

It is an amenable number.

1319890527401 is a deficient number, since it is larger than the sum of its proper divisors (17483803).

1319890527401 is an equidigital number, since it uses as much as digits as its factorization.

1319890527401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17483802.

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 1319890527401 in words is "one trillion, three hundred nineteen billion, eight hundred ninety million, five hundred twenty-seven thousand, four hundred one".