1649693614 has 4 divisors (see below), whose sum is σ = 2474540424. Its totient is φ = 824846806.

The previous prime is 1649693603. The next prime is 1649693621. The reversal of 1649693614 is 4163969461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4163969461 = 373 ⋅11163457.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412423402 + ... + 412423405.

It is an arithmetic number, because the mean of its divisors is an integer number (618635106).

Almost surely, 2^1649693614 is an apocalyptic number.

1649693614 is a deficient number, since it is larger than the sum of its proper divisors (824846810).

1649693614 is an equidigital number, since it uses as much as digits as its factorization.

1649693614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824846809.

The product of its digits is 839808, while the sum is 49.

The square root of 1649693614 is about 40616.4204971339. The cubic root of 1649693614 is about 1181.5926053656.

The spelling of 1649693614 in words is "one billion, six hundred forty-nine million, six hundred ninety-three thousand, six hundred fourteen".