1491014387041 has 27 divisors (see below), whose sum is σ = 1551681750969. Its totient is φ = 1432697257152.

The previous prime is 1491014386993. The next prime is 1491014387081. The reversal of 1491014387041 is 1407834101941.

The square root of 1491014387041 is 1221071.

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

It can be written as a sum of positive squares in 4 ways, for example, as 64910300625 + 1426104086416 = 254775^2 + 1194196^2 .

It is not a de Polignac number, because 1491014387041 - 2²¹ = 1491012289889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1491014387081) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3832941675 + ... + 3832942063.

Almost surely, 2^{1491014387041} is an apocalyptic number.

1491014387041 is the 1221071-st square number.

1491014387041 is the 610536-th centered octagonal number.

It is an amenable number.

1491014387041 is a deficient number, since it is larger than the sum of its proper divisors (60667363928).

1491014387041 is an frugal number, since it uses more digits than its factorization.

1491014387041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

Adding to 1491014387041 its reverse (1407834101941), we get a palindrome (2898848488982).

The spelling of 1491014387041 in words is "one trillion, four hundred ninety-one billion, fourteen million, three hundred eighty-seven thousand, forty-one".