1694890245 has 32 divisors (see below), whose sum is σ = 2737526400. Its totient is φ = 895405824.

The previous prime is 1694890243. The next prime is 1694890271. The reversal of 1694890245 is 5420984961.

It is not a de Polignac number, because 1694890245 - 2¹ = 1694890243 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1694890194 and 1694890203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1694890243) 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, 1527751 + ... + 1528859.

It is an arithmetic number, because the mean of its divisors is an integer number (85547700).

Almost surely, 2^1694890245 is an apocalyptic number.

1694890245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1694890245 is a deficient number, since it is larger than the sum of its proper divisors (1042636155).

1694890245 is a wasteful number, since it uses less digits than its factorization.

1694890245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 1694890245 is about 41169.0447423790. The cubic root of 1694890245 is about 1192.2862258485.

The spelling of 1694890245 in words is "one billion, six hundred ninety-four million, eight hundred ninety thousand, two hundred forty-five".