1695749540437 has 2 divisors, whose sum is σ = 1695749540438. Its totient is φ = 1695749540436.

The previous prime is 1695749540399. The next prime is 1695749540477. The reversal of 1695749540437 is 7340459475961.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 869321275876 + 826428264561 = 932374^2 + 909081^2 .

It is a cyclic number.

It is not a de Polignac number, because 1695749540437 - 2¹⁹ = 1695749016149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1695749540477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 847874770218 + 847874770219.

It is an arithmetic number, because the mean of its divisors is an integer number (847874770219).

Almost surely, 2^{1695749540437} is an apocalyptic number.

It is an amenable number.

1695749540437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1695749540437 is an equidigital number, since it uses as much as digits as its factorization.

1695749540437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 114307200, while the sum is 64.

The spelling of 1695749540437 in words is "one trillion, six hundred ninety-five billion, seven hundred forty-nine million, five hundred forty thousand, four hundred thirty-seven".