1649461269 has 16 divisors (see below), whose sum is σ = 2318834880. Its totient is φ = 1040054400.

The previous prime is 1649461259. The next prime is 1649461337. The reversal of 1649461269 is 9621649461.

It is not a de Polignac number, because 1649461269 - 2¹⁷ = 1649330197 is a prime.

It is a super-2 number, since 2×1649461269² = 5441444955862180722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649461259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11719 + ... + 58619.

It is an arithmetic number, because the mean of its divisors is an integer number (144927180).

Almost surely, 2^1649461269 is an apocalyptic number.

1649461269 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1649461269 is a deficient number, since it is larger than the sum of its proper divisors (669373611).

1649461269 is a wasteful number, since it uses less digits than its factorization.

1649461269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47540.

The product of its digits is 559872, while the sum is 48.

The square root of 1649461269 is about 40613.5601616012. The cubic root of 1649461269 is about 1181.5371304133.

The spelling of 1649461269 in words is "one billion, six hundred forty-nine million, four hundred sixty-one thousand, two hundred sixty-nine".