1495081657 has 2 divisors, whose sum is σ = 1495081658. Its totient is φ = 1495081656.

The previous prime is 1495081649. The next prime is 1495081729. The reversal of 1495081657 is 7561805941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1074790656 + 420291001 = 32784^2 + 20501^2 .

It is a cyclic number.

It is not a de Polignac number, because 1495081657 - 2³ = 1495081649 is a prime.

It is a super-2 number, since 2×1495081657² = 4470538322195731298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1495081157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747540828 + 747540829.

It is an arithmetic number, because the mean of its divisors is an integer number (747540829).

Almost surely, 2^1495081657 is an apocalyptic number.

It is an amenable number.

1495081657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1495081657 is an equidigital number, since it uses as much as digits as its factorization.

1495081657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 46.

The square root of 1495081657 is about 38666.2857926644. The cubic root of 1495081657 is about 1143.4617398832.

The spelling of 1495081657 in words is "one billion, four hundred ninety-five million, eighty-one thousand, six hundred fifty-seven".