1495274509 has 2 divisors, whose sum is σ = 1495274510. Its totient is φ = 1495274508.

The previous prime is 1495274461. The next prime is 1495274527. The reversal of 1495274509 is 9054725941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 799475625 + 695798884 = 28275^2 + 26378^2 .

It is a cyclic number.

It is not a de Polignac number, because 1495274509 - 2¹⁷ = 1495143437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1495274579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747637254 + 747637255.

It is an arithmetic number, because the mean of its divisors is an integer number (747637255).

Almost surely, 2^1495274509 is an apocalyptic number.

It is an amenable number.

1495274509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1495274509 is an equidigital number, since it uses as much as digits as its factorization.

1495274509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 1495274509 is about 38668.7795126766. The cubic root of 1495274509 is about 1143.5109031739.

The spelling of 1495274509 in words is "one billion, four hundred ninety-five million, two hundred seventy-four thousand, five hundred nine".