1649707355 has 4 divisors (see below), whose sum is σ = 1979648832. Its totient is φ = 1319765880.

The previous prime is 1649707333. The next prime is 1649707373. The reversal of 1649707355 is 5537079461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1649707355 - 2⁸ = 1649707099 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164970731 + ... + 164970740.

It is an arithmetic number, because the mean of its divisors is an integer number (494912208).

Almost surely, 2^1649707355 is an apocalyptic number.

1649707355 is a deficient number, since it is larger than the sum of its proper divisors (329941477).

1649707355 is an equidigital number, since it uses as much as digits as its factorization.

1649707355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329941476.

The product of its (nonzero) digits is 793800, while the sum is 47.

The square root of 1649707355 is about 40616.5896525053. The cubic root of 1649707355 is about 1181.5958860191.

The spelling of 1649707355 in words is "one billion, six hundred forty-nine million, seven hundred seven thousand, three hundred fifty-five".