1495687057 has 2 divisors, whose sum is σ = 1495687058. Its totient is φ = 1495687056.

The previous prime is 1495687051. The next prime is 1495687069. The reversal of 1495687057 is 7507865941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1334879296 + 160807761 = 36536^2 + 12681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1495687057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1495686995 and 1495687013.

It is not a weakly prime, because it can be changed into another prime (1495687051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747843528 + 747843529.

It is an arithmetic number, because the mean of its divisors is an integer number (747843529).

Almost surely, 2^1495687057 is an apocalyptic number.

It is an amenable number.

1495687057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1495687057 is an equidigital number, since it uses as much as digits as its factorization.

1495687057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The square root of 1495687057 is about 38674.1135257164. The cubic root of 1495687057 is about 1143.6160588391.

The spelling of 1495687057 in words is "one billion, four hundred ninety-five million, six hundred eighty-seven thousand, fifty-seven".