1690055390357 has 4 divisors (see below), whose sum is σ = 1779005674080. Its totient is φ = 1601105106636.

The previous prime is 1690055390333. The next prime is 1690055390411. The reversal of 1690055390357 is 7530935500961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1690055390357 - 2³⁴ = 1672875521173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1690055390299 and 1690055390308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690055320357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44475141833 + ... + 44475141870.

It is an arithmetic number, because the mean of its divisors is an integer number (444751418520).

Almost surely, 2^{1690055390357} is an apocalyptic number.

It is an amenable number.

1690055390357 is a deficient number, since it is larger than the sum of its proper divisors (88950283723).

1690055390357 is an equidigital number, since it uses as much as digits as its factorization.

1690055390357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88950283722.

The product of its (nonzero) digits is 3827250, while the sum is 53.

The spelling of 1690055390357 in words is "one trillion, six hundred ninety billion, fifty-five million, three hundred ninety thousand, three hundred fifty-seven".