1495639081 has 2 divisors, whose sum is σ = 1495639082. Its totient is φ = 1495639080.

The previous prime is 1495639043. The next prime is 1495639087. The reversal of 1495639081 is 1809365941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1442480400 + 53158681 = 37980^2 + 7291^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1495639081 is a prime.

It is a super-2 number, since 2×1495639081² = 4473872521229049122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1495639087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747819540 + 747819541.

It is an arithmetic number, because the mean of its divisors is an integer number (747819541).

Almost surely, 2^1495639081 is an apocalyptic number.

It is an amenable number.

1495639081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1495639081 is an equidigital number, since it uses as much as digits as its factorization.

1495639081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 1495639081 is about 38673.4932608887. The cubic root of 1495639081 is about 1143.6038310783.

The spelling of 1495639081 in words is "one billion, four hundred ninety-five million, six hundred thirty-nine thousand, eighty-one".