1396075454981 has 2 divisors, whose sum is σ = 1396075454982. Its totient is φ = 1396075454980.

The previous prime is 1396075454959. The next prime is 1396075454989. The reversal of 1396075454981 is 1894545706931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1097266725025 + 298808729956 = 1047505^2 + 546634^2 .

It is an emirp because it is prime and its reverse (1894545706931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1396075454981 - 2¹⁰ = 1396075453957 is a prime.

It is a super-2 number, since 2×1396075454981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1396075454989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698037727490 + 698037727491.

It is an arithmetic number, because the mean of its divisors is an integer number (698037727491).

Almost surely, 2^{1396075454981} is an apocalyptic number.

It is an amenable number.

1396075454981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396075454981 is an equidigital number, since it uses as much as digits as its factorization.

1396075454981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 1396075454981 in words is "one trillion, three hundred ninety-six billion, seventy-five million, four hundred fifty-four thousand, nine hundred eighty-one".