1649475079 has 16 divisors (see below), whose sum is σ = 1960269120. Its totient is φ = 1357977600.

The previous prime is 1649475067. The next prime is 1649475089. The reversal of 1649475079 is 9705749461.

It is not a de Polignac number, because 1649475079 - 2⁷ = 1649474951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649475089) 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, 18129 + ... + 60229.

It is an arithmetic number, because the mean of its divisors is an integer number (122516820).

Almost surely, 2^1649475079 is an apocalyptic number.

1649475079 is a deficient number, since it is larger than the sum of its proper divisors (310794041).

1649475079 is a wasteful number, since it uses less digits than its factorization.

1649475079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42330.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 1649475079 is about 40613.7301783522. The cubic root of 1649475079 is about 1181.5404278500.

The spelling of 1649475079 in words is "one billion, six hundred forty-nine million, four hundred seventy-five thousand, seventy-nine".