915485515493 has 2 divisors, whose sum is σ = 915485515494. Its totient is φ = 915485515492.

The previous prime is 915485515487. The next prime is 915485515501. The reversal of 915485515493 is 394515584519.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 910692307204 + 4793208289 = 954302^2 + 69233^2 .

It is a cyclic number.

It is not a de Polignac number, because 915485515493 - 2⁶ = 915485515429 is a prime.

It is a super-2 number, since 2×915485515493² (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 (915485515423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 457742757746 + 457742757747.

It is an arithmetic number, because the mean of its divisors is an integer number (457742757747).

Almost surely, 2^915485515493 is an apocalyptic number.

It is an amenable number.

915485515493 is a deficient number, since it is larger than the sum of its proper divisors (1).

915485515493 is an equidigital number, since it uses as much as digits as its factorization.

915485515493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440000, while the sum is 59.

The spelling of 915485515493 in words is "nine hundred fifteen billion, four hundred eighty-five million, five hundred fifteen thousand, four hundred ninety-three".