1690466624137 has 2 divisors, whose sum is σ = 1690466624138. Its totient is φ = 1690466624136.

The previous prime is 1690466624131. The next prime is 1690466624173. The reversal of 1690466624137 is 7314266640961.

Together with next prime (1690466624173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 915114171456 + 775352452681 = 956616^2 + 880541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1690466624137 is a prime.

It is a super-2 number, since 2×1690466624137² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1690466624131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 845233312068 + 845233312069.

It is an arithmetic number, because the mean of its divisors is an integer number (845233312069).

Almost surely, 2^{1690466624137} is an apocalyptic number.

It is an amenable number.

1690466624137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1690466624137 is an equidigital number, since it uses as much as digits as its factorization.

1690466624137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 1690466624137 in words is "one trillion, six hundred ninety billion, four hundred sixty-six million, six hundred twenty-four thousand, one hundred thirty-seven".