1495148561 has 2 divisors, whose sum is σ = 1495148562. Its totient is φ = 1495148560.

The previous prime is 1495148533. The next prime is 1495148581. The reversal of 1495148561 is 1658415941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1086097936 + 409050625 = 32956^2 + 20225^2 .

It is a cyclic number.

It is not a de Polignac number, because 1495148561 - 2¹⁸ = 1494886417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1495148581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747574280 + 747574281.

It is an arithmetic number, because the mean of its divisors is an integer number (747574281).

Almost surely, 2^1495148561 is an apocalyptic number.

It is an amenable number.

1495148561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1495148561 is an equidigital number, since it uses as much as digits as its factorization.

1495148561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 44.

The square root of 1495148561 is about 38667.1509294388. The cubic root of 1495148561 is about 1143.4787960359.

The spelling of 1495148561 in words is "one billion, four hundred ninety-five million, one hundred forty-eight thousand, five hundred sixty-one".