1690078473 has 16 divisors (see below), whose sum is σ = 2504453440. Its totient is φ = 1126433952.

The previous prime is 1690078471. The next prime is 1690078483. The reversal of 1690078473 is 3748700961.

It is not a de Polignac number, because 1690078473 - 2¹ = 1690078471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1690078471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201165 + ... + 209397.

It is an arithmetic number, because the mean of its divisors is an integer number (156528340).

Almost surely, 2^1690078473 is an apocalyptic number.

It is an amenable number.

1690078473 is a deficient number, since it is larger than the sum of its proper divisors (814374967).

1690078473 is an equidigital number, since it uses as much as digits as its factorization.

1690078473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15845 (or 15839 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1690078473 is about 41110.5640073206. The cubic root of 1690078473 is about 1191.1568612436.

The spelling of 1690078473 in words is "one billion, six hundred ninety million, seventy-eight thousand, four hundred seventy-three".