1295158958381 has 2 divisors, whose sum is σ = 1295158958382. Its totient is φ = 1295158958380.

The previous prime is 1295158958363. The next prime is 1295158958407. The reversal of 1295158958381 is 1838598515921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1280495928100 + 14663030281 = 1131590^2 + 121091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1295158958381 is a prime.

It is a super-2 number, since 2×1295158958381² (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 (1295158955381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647579479190 + 647579479191.

It is an arithmetic number, because the mean of its divisors is an integer number (647579479191).

Almost surely, 2^{1295158958381} is an apocalyptic number.

It is an amenable number.

1295158958381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295158958381 is an equidigital number, since it uses as much as digits as its factorization.

1295158958381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104000, while the sum is 65.

The spelling of 1295158958381 in words is "one trillion, two hundred ninety-five billion, one hundred fifty-eight million, nine hundred fifty-eight thousand, three hundred eighty-one".