1649496995 has 16 divisors (see below), whose sum is σ = 2096966880. Its totient is φ = 1241301504.

The previous prime is 1649496943. The next prime is 1649496997. The reversal of 1649496995 is 5996949461.

It is a Cunningham number, because it is equal to 40614²-1.

It is a cyclic number.

It is not a de Polignac number, because 1649496995 - 2³⁰ = 575755171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1649496997) 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, 199004 + ... + 207126.

It is an arithmetic number, because the mean of its divisors is an integer number (131060430).

Almost surely, 2^1649496995 is an apocalyptic number.

1649496995 is a deficient number, since it is larger than the sum of its proper divisors (447469885).

1649496995 is a wasteful number, since it uses less digits than its factorization.

1649496995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10534.

The product of its digits is 18895680, while the sum is 62.

The square root of 1649496995 is about 40613.9999876890. Note that the first 4 decimals coincide. The cubic root of 1649496995 is about 1181.5456607320.

The spelling of 1649496995 in words is "one billion, six hundred forty-nine million, four hundred ninety-six thousand, nine hundred ninety-five".