1690743273 has 32 divisors (see below), whose sum is σ = 2341633536. Its totient is φ = 1084435968.

The previous prime is 1690743233. The next prime is 1690743277. The reversal of 1690743273 is 3723470961.

It is not a de Polignac number, because 1690743273 - 2⁸ = 1690743017 is a prime.

It is a super-2 number, since 2×1690743273² = 5717225630389505058, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1690743277) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4789465 + ... + 4789817.

It is an arithmetic number, because the mean of its divisors is an integer number (73176048).

Almost surely, 2^1690743273 is an apocalyptic number.

It is an amenable number.

1690743273 is a deficient number, since it is larger than the sum of its proper divisors (650890263).

1690743273 is a wasteful number, since it uses less digits than its factorization.

1690743273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 190512, while the sum is 42.

The square root of 1690743273 is about 41118.6487253655. The cubic root of 1690743273 is about 1191.3130230800.

The spelling of 1690743273 in words is "one billion, six hundred ninety million, seven hundred forty-three thousand, two hundred seventy-three".